Citing sources intext using APA-style can be confusing. The following text provides some examples.
Citing in text: narrative or parenthetical citations
Use one of the following formats when citing a source in the context of a discussion board post, blog, or paper. The first two examples are if the idea of from the source is being paraphrased; the last two examples are if the source is directly quoted:
If you are including more than one citation in the parens ( ), the citations should be alphabetized and separated by a semicolon:
Sometimes the in-text citations of source look remarkably similar, thus creating confusion. In the case where there are three or more authors, you can shorten the in-text citations, listing as many unique authors followed by et al to differentiate between sources. APA-style has a prescribed method for shortening in-text citations and using et al. The information in the linked resource provides a more detailed description and examples. You can also find the information in Section 8.18 in the Publication Manual (7th ed.).
Currently, the advice from the American Psychological Association is to cite AI-generated information (e.g., ChatGPT) as personal communication. The purpose of the Reference entry is for people to get back to your sources, but they can't do that with sources like ChatGPT, which is why it's cited as if it were personal communication. While a Reference entry is not required for personal communication you may wish to include it for information pulled from an artificial intelligence generator. Another option would be to include the full transcript of the AI-generated information in an Appendix of your paper. The second example below demonstrates that process.
Taken from the APA Blog. Information is also adapted from Section 10.10 of the Publication Manual of the American Psychological Association (2020)
When prompted with “Is the left brain right brain divide real or a metaphor?” the ChatGPT-generated text indicated that although the two brain hemispheres are somewhat specialized, “the notation that people can be characterized as ‘left-brained’ or ‘right-brained’ is considered to be an oversimplification and a popular myth” (OpenAI, 2023).
OpenAI. (2023). ChatGPT (Mar 14 version) [Large language model]. https://chat.openai.com/chat
When given a follow-up prompt of “What is a more accurate representation?” the ChatGPT-generated text indicated that “different brain regions work together to support various cognitive processes” and “the functional specialization of different regions can change in response to experience and environmental factors” (OpenAI, 2023; see Appendix A for the full transcript).
OpenAI. (2023). ChatGPT (Mar 14 version) [Large language model]. https://chat.openai.com/chat
Example 1: Adamopoulos, J. (2004). Interpersonal behavior and culture. In C. D. Spielberger (Ed.), Encyclopedia of applied psychology. Elsevier Science & Technology. Credo Reference. https://search.credoreference.com/content/entry/estappliedpsyc/interpersonal_behavior_and_culture/0?institutionId=4721
Parenthetical citation 1: (Adamopoulos, 2004)
Narrative citation 1: Adamopoulos (2004)
Example 2: Bradsher, B. (2023). Sports safety. In CQ Researcher. CQ Press. https://
Parenthetical citation 2: (Bradsher, 2023)
Narrative citation 2: Bradsher (2023) indicated that.....
If there is no author of the entry, use the following format:
Example: Ruth, Babe (George Herman). (2004). In P. Cornelison, & T. Yanak, The great American history fact-finder (2nd ed.). Houghton Mifflin. Credo Reference. https://search.credoreference.com/content/entry/hmgahff/ruth_babe_george_herman/0?institutionId=4721
Example: Merriam-Webster. (n.d.) Self-report. In Merriam-Webster dictionary. Retrieved July 12, 2019, from https://www.merriam-webster.com/dictionary/self-report
Author. (date). Title of chapter. In names of editor(s) (Ed. or Eds.), Title of work: Vol. #. Title of volume (edition, page numbers). Publisher. doi
Example: Goldin-Meado, S. (2015). Gesture and cognitive development. In L. S. Liben & U. Mueller (Eds.), Handbook of child psychology and developmental science, Vol.2. Cognitive processes (7th ed., pp. 339-380). John Wiley & Sons. https://doi.org/10.1002/9781118963418.childpsy209
Example: High-functioning autism. (2020, February, 12). In Wikipedia. https://en.wikipedia.org/wiki/High-functioning_autism
Parenthetical citation: ("High-functioning Autism", 2020)
Narrative citation: "High-functioning Autism" (2004)
If you quote directly from the source be sure to include the paragraph number where the quote resides in the parenthetical/narrative citations. (ex., "High-functioning autism", 2020, para. 4).
[Taken from pages 328 and 329, section 10.3, entries #45, #47, #48 and #49, in the Publication Manual of the American Psychological Association, 7th ed.]
Always verify formatting of electronically generated citations with either the Online Writing Lab (OWL) at Purdue, the Publication Manual of the American Psychological Association (7th ed.), the APA blog. You may also consult with a librarian or Writing Center tutor regarding source citation formatting. Make sure to double space and insert the hanging indent for all sources.
Example: Brown, L. S. (2018). Feminist therapy (2nd ed.). American Psychological Association. https://doi.org/10.1037/0000092-000
Example: Corcoran, J., & Walsh, J. (2016). Clinical assessment and diagnosis in social work practice. Oxford University Press. https://ebookcentral.proquest.com/lib/nnu-ebooks/detail.action?docID=4706603#
Example: Gray, M., & Webb, S.A. (2012). Social work theories and methods. Sage. https://www.google.com/books/edition/Social_Work_Theories_and_Methods/tbRlN0aXO08C?hl=en&gbpv=1
Example: Gray, M., & Webb, S.A. (2012). Social work theories and methods. Sage. https://tinyurl.com/yckz4zdz
Note: The third example is the preferred style for Google Books. The second example is a Google Book with the full URL.
Example: Bush, S., & Heck, A. L. (Eds.). (2018). Forensic geropsychology: Practice essentials. American Psychological Association. https://dx.doi.org/10.137/0000082-000
Example: Balsam, K. F., Martell, C. R., Jones, K. P., & Safren. S.A. (2019). Affirmative cognitive behavior therapy with sexual and gender minority people. In G. Y. Iwamasa & P. A. Hays (Eds.), Culturally responsive cognitive behavior therapy: Practice and supervision (2nd ed., pp. 287-314). American Psychological Association. https://doi.org/10.1037/0000119-012
NOTE: For more information about source formatting for eBooks, refer to the APA-style Blog.
[Taken from pages 321 through 323, 326 through 329, in the Publication Manual of the American Psychological Association, 7th ed.]
Reference Entry Examples:
American Counseling Association. (2014). 2014 ACA code of ethics. https://www.counseling.org/docs/default-source/default-document-library/2014-code-of-ethics-finaladdress.pdf
American Nurses Association. (2015). Code of ethics for nurses with interpretive statements. https://www.nursingworld.org/practice-policy/nursing-excellence/ethics/code-of-ethics-for-nurses/coe-view-only/
American Psychological Association. (2017). Ethical principles of psychologists and code of conduct (2002, amended effective June 1, 2010, and January 1, 2017). https://www.apa.org/ethics/code/
National Association of Social Workers (2021). Code of ethics. https://www.socialworkers.org/About/Ethics/Code-of-Ethics
Parenthetical Citation Examples:
(American Counseling Association, 2014; American Nurses Association, 2015; American Psychological Association, 2017; National Association of Social Workers, 2021)
Narrative Citation Examples:
American Counseling Association (2014), American Nurses Association (2015), and American Psychological Association (2017), National Association of Social Workers (2021)
If you are citing a specific section or part:
Parenthetical Citations for specific Sections:
(American Counseling Association, 2014, Section A.1.d)
(American Nurses Association, 2015, Provision 1.4)
(American Psychological Association, 2017, Standard 3.04)
(National Association of Social Workers, 2021, Section 4.06)
Narrative Citations for specific Sections:
American Counseling Association (2014, Section A.1.d.)
American Nurses Association (2015, Provision 1.4)
American Psychological Association (2017, Standard 3.04)
National Association of Social Workers (2021, Section 4.06)
Information taken from the Publication Manual of the American Psychological Association, Section 10.4, Entry #55 (page 330) and the APA Style Blog.
Always verify formatting of electronically generated citations with either the Online Writing Lab (OWL) at Purdue, the Publication Manual of the American Psychological Association (7th ed.), the APA blog. You may also consult with a librarian or Writing Center tutor regarding source citation formatting. Make sure to double space and insert the hanging indent for all sources.
Examples: D'Souza, A., & Wiseheart, M. (2018). Cognitive effects of music and dance training in children (ICPSR 37080; Version V1) [Data set]. ICPSR. https://doi.org/10.3886/ICPSR37080.v1
National Center for Education Statistics. (2016). Fast Response Survey System (FRSS): Teachers' use of educational technology in U.S. public schools, 2009 (ICPSR 35531; Version V3) [Data set and code book]. National Archive Data on Arts and Culture. https://doi.org/3886/ICPSR35531.v3
Pew Research Center. (2018). American trends panel Wave 26 [Data set]. https://www.pewsocialtrends.org/dataset/american-trends-panel-wave-26
Examples: Baer, R. A. (2015). [Unpublished raw data on the correlations between the Five Facet Mindfulness Questionnaire and the Kentucky Inventory of Mindfulness Skills]. University of Kentucky.
Oregon Youth Authority. (2018). Recidivism outcomes. [Unpublished raw data].
[Information taken from pages 337-338, section 10.9, entries #75 and #76, in the Publication Manual of the American Psychological Association, 7th ed.]
Always verify formatting of electronically generated citations with either the Online Writing Lab (OWL) at Purdue, the Publication Manual of the American Psychological Association (7th ed.), the APA blog. You may also consult with a librarian or Writing Center tutor regarding source citation formatting. Make sure to double space and insert the hanging indent for all sources.
Example: Hollander, M. M. (2017). Resistance to authority: Methodological innovations and new lessons from the Milgram experiment (Publication No. 10289373) [Doctoral dissertation, University of Wisconsin-Madison]. ProQuest Dissertations and Theses Global.
Sullivan, W. D. (2017). A case study exploring international student engagement at small, private colleges. https://nnu.whdl.org
Example: Sullivan, W. D. (2017). A case study exploring international student engagement at small, private colleges.[Unpublished doctoral dissertation]. Northwest Nazarene University
Example: Sullivan, W. D. (2017). A case study exploring international student engagement at small, private colleges [Doctoral dissertation, Northwest Nazarene University]. https://nnu.whdl.org
[Taken from pages 333-334, section 10.6, entries #64 through #66, in the Publication Manual of the American Psychological Association, 7th ed.]
Always verify formatting of electronically generated citations with either the Online Writing Lab (OWL) at Purdue, and/or the Publication Manual of the American Psychological Association (7th ed.). You may also consult with a librarian or Writing Center tutor regarding source citation formatting. Make sure to double space and insert the hanging indent for all sources.
American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed.). https://doi.org/10.1176/appi.books.9780890425596
World Health Organization. (2019). International statistical classification of diseases and related health problems (11th ed.). https://icd.who.int/
Parenthetical citation with abbreviation included:
Diagnostic and Statistical Manual of Mental Disorders (5th ed.; DSM-5; American Psychiatric Association, 2013).
International Statistical Classification of Diseases and Related Health Problems (11th ed.; ICD-11).
Narrative citation with abbreviation included:
American Psychiatric Association's (2013) Diagnostic and Statistical Manual of Mental Disorders (5th ed.; DSM-5)
World Health Organization's (2019) International Statistical Classification of Diseases and Related Health Problems (11th ed.; ICD-11)
Subsequent parenthetical citations:
(American Psychiatric Association, 2013; World Health Organization, 2019)
Subsequent narrative citations:
American Psychiatric Association (2013) and World Health Organization (2019)
[Taken from page 324, section 10.2, entry #32, in the Publication Manual of the American Psychological Association, 7th ed.]
Always verify formatting of electronically generated citations with either the Online Writing Lab (OWL) at Purdue, and/or the Publication Manual of the American Psychological Association (6th ed.). You may also consult with a librarian or Writing Center tutor regarding source citation formatting. Make sure to double space and insert the hanging indent for all sources.
Example: Cochrane, T., Antonczak, L., Guinibert, M., & Mulrennan, D. (2014). Developing a mobile social media framework for creative pedagogies. (ED557171). ERIC. https://files.eric.ed.gov/fulltext/ED557241.pdf
NOTE: If the item in the ERIC database has an EJ before the number it is a journal article. Cite it as a journal article, not as an ERIC document.
[Taken from page 337, section 10.8, entry #74, in the Publication Manual of the American Psychological Association, 7th ed.]
Always verify formatting of electronically generated citations with either the Online Writing Lab (OWL) at Purdue, the Publication Manual of the American Psychological Association (7th ed.), the APA blog. You may also consult with a librarian or Writing Center tutor regarding source citation formatting. Also, use CrossRef to locate a doi if the database from which you found the article does not list one. Use the "Search an Article Title" option. Make sure to double space and insert the hanging indent for all sources.
Example: Berger, I. (2015). Educational leadership with an ethics of plurality and natality. Studies in Philosophy & Education, 34(5), 475-487. https://dx.doi.org/10.1007/s11217-014-9448-x
Parenthetical citation: (Berger, 2015)
If you use a direct quote from the source: (Berger, 2015, p.477)
Narrative citation: Berger (2015) OR Berger demonstrated that ....... (2015)
If you quote directly from the source: Berger (2015, p. 477) noted, "......" OR Berger noted, "......." (2015, p.477)
Example: Ahmann, E., Tuttle, L. J., Saviet, M., & Wright, S. D. (2018). A descriptive review of ADHD coaching research: Implications for college students. Journal of Postsecondary Education and Disability, 31(1), 17-39. https://www.ahead.org/professonal-resources/publications/jped/archived-jped/jped-volume-31
Parenthetical citation: (Ahmann et al., 2018)
If you quote directly from the source: (Ahmann et al., 2018, p. 22)
Narrative citation: Ahmann et al. (2018) OR Ahmann et al. ... (2018)
If you quote directly from the source: Ahmann et al. (2018, p. 22) noted, "......" OR Ahmann et al. noted, "......." (2018, p.22)
Examples: Anderson, M. (2018). Getting consistent with consequences. Educational Leadership, 76(1), 26-33.
Parenthetical citation: (Anderson, 2018)
If you use a direct quote from the source: (Anderson, 2018, p. 27)
Narrative citation: Anderson (2018) OR Anderson demonstrated that ....... (2018)
If you quote directly from the source: Anderson (2018, p. 30) noted, "......" OR Anderson noted, "......." (2018, p. 30)
Example: Sanchiz, M., Chevalier, A., & Amadieu, F. (2017). How do older and young adults start searching for information? Impact of age, domain knowledge and problem complexity on the different steps of information searching. Computers in Human Behavior, 72, 67–78. https://doi.org/10.1016/j.chb.2017.02.038
Parenthetical citation: (Sanchiz, Chevalier, & Amadieu, 2017)
If you use a direct quote from the source: (Sanchiz, Chevalier, & Amadieu, 2017, p.72)
Narrative citation: According to Sanchiz, Chevalier, & Amadieu (2017)
If you quote directly from the source: Sanchiz, Chevalier, & Amadieu noted that, "........." (2017, p. 73).
Sometimes e-Journals will have an article number rather than an issue number and/or page numbers
Example: Arevalo, M-J., Cantera, M. A., Garcia-Marina, V., & Alves-Castro, M.. (2021). Analysis of university STEM students’ mathematical, linguistic, rhetorical–organizational assignment errors. Education Sciences, 11, Article 173, 1-17.
Sometimes you will find articles that have not yet officially published in a journal, but they are being released by the publisher ahead of "print".
Example: Fowler, S., Kennedy, J.P., Cutting, C., Gabriel, F., & Leonard, S. N. (2023). Self-determined learning in a virtual makerspace: A pathway to improving spatial reasoning for upper primary students. International Journal of Technology and Design Education, Advance online publication. https://doi.org/10.1007/s10798-023-09840-y
Example: Wing, M., & Saboda, J. (2018). Charter schools: The destruction of teacher certification in New York
state [Special issue]. Texas Education Review, 31-79.
Journal Article with a DOI, 21 or more authors
Example: Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D., Gandin, L., ... & Zhu, Y. (1996). The NCEP/NCAR 40-year reanalysis project. Bulletin of the American Meteorological Society, 77(3), 437-472. http://dx.doi.org/10.1175/1520-0477(1996)077%3C0437:TNYRP%3E2.0.CO;2
[Taken from the Publication Manual of the American Psychological Association, 7th ed., pp. 317-319, section 10.1, entries #1-7, 12]
Always verify formatting of electronically generated citations with either the Online Writing Lab (OWL) at Purdue, the Publication Manual of the American Psychological Association (7th ed.), the APA blog. You may also consult with a librarian or Writing Center tutor regarding source citation formatting. Make sure to double space and insert the hanging indent for all sources.
The UptoDate database is unique in the sense that entries are peer-reviewed (like many journal articles), but it may also be considered an online reference work. The following outlines how you should cite an entry obtained through the UptoDate database.
Author 1, & Author 2. (date). Title of entry. In first and middle initial last name (Ed.), UpToDate. Retrieved month day, year, from url of entry.
Example:
Twaddle, M. L., & McCormick, E. (2016). Palliative care delivery in the home. UpToDate. Retrieved October 29, 2019, from https://www.uptodate.com/contents/palliative-care-delivery-in-the-home
Parenthetical citation: (Twaddle & McCormick, 2016)
If you quoted directly from the source, (Twaddle & McCormick, 2016, para. #)
Narrative citation: Twaddle and McCormick (2016) OR Twaddle and McCormick indicated that ...... (2016)
If you quoted directly from the source, include the paragraph number for where the information is located.
[Information taken from page 319, section 10.1, entry #14, in the Publication Manual of the American Psychological Association, 7th ed.]
Example: Turner, P. (2017, September/October). Catholics and the Protestant Reformation. Holiness Today, 19(5), 25-27.
Example: Wapner, J. (2018, June). Could fasting cure diabetes?: Evidence on not eating for long stretches is compelling-and controversial. Newsweek. https://www.newsweek.com/could-fasting-cure-diabetes-evidence-not-eating-long-stretches-compelling-and-962014 OR https://tinyurl.com/yxx27wcr
Example: Wright, S. (2018, June 6). Non-native shrimp dumped in the Boise River are thriving. Idaho Statesman, pp.4A.
Example: Myers, S. L., & Perlez, J. (2018, June 6). A medical mystery grows as U.S. consulate workers in China fall ill. Seattle Times. https://www.seattletimes.com/nation-world/medical-mystery-grows-as-more-u-s-consulate-workers-in-china-fall-ill/ OR https://tinyurl.com/6zk2knmu
Example: Andrews, S. (2020, February 24). A heat wave in Antarctica melted 20% of an island's snow in 9 days. CNN. https://www.cnn.com/2020/02/24/world/antarctica-heat-wave-melt-february-trnd/index.html OR shorter URL using tinyurl.com
Example: Elders, M. J. (2012). Coming to grips with the U.S. adolescent birth rate [Editorial]. American Journal of Public Health, 102(112), 2205-2206. https://doi.org/10.2105/AJPH.2012.300978
[Information taken from pages 320, entries #15 through #19, and page 351, entry #110 in the Publication Manual of the American Psychological Association, 7th ed.]
Example: Project Implicit. (n.d.). Gender-Science IAT. https://implicit.harvard.edu/implicit/takeatest.html
Example: Soares, L. M., & Soares, A. T. (1999). Self-Perceptions Inventory [1999 Revision] (The) [Database record]. Mental Measurements Yearbook.
Example: Tellegen, A., & Ben-Porath, Y. S. (2011). Minnesota Multiphasic Personality Inventory-2 Restructured Form (MMPI-2-RF): Technical manual. Pearson.
Always verify formatting of electronically generated citations with either the Online Writing Lab (OWL) at Purdue, the Publication Manual of the American Psychological Association (7th ed.), the APA blog. You may also consult with a librarian or Writing Center tutor regarding source citation formatting. Make sure to double space and insert the hanging indent for all sources.
Works, such as the Bible, Qur'an, and Torah, will now have entries in the Reference list. In previous editions of APA-style, such works had only parenthetical references.
King James Bible. (2017). King James Bible Online. https://kingjamesbibleonline.org/ (Original work published 1769)
The Qur'an (M. A. S. Abdel Haleem, Trans.). (2004). Oxford University Press.
The Torah: The five books of Moses (3rd ed.). (2015). The Jewish Publication Society. (Original work published in 1962).
Parenthetical citation:
(King James Bible, 1769/2017; The Qur'an, 2004; The Torah, 1962/2015)
Narrative citation:
King James Bible (1769/2017), The Qur'an (2004), and The Torah (1962/2015)
[Taken from page 325, section 10.2, entry #35 in the Publication Manual of the American Psychological Association, 7th ed.]
Sometimes you may need to reference an entire an entire mobile app rather than individual pieces of information from the app. The example below provides guidance on how to cite an app.
Creator of app. (date). App title (Version) [Mobile app]. Vendor name (e.g. App Store). URL.
Example: Lexicomp. (2019). Lexicomp (Version 5.02) [Mobile app]. Google Play Store. https://play.google.com/store/apps/details?id=com.lexi.android
Parenthetical citation: (Lexicomp, 2019)
Narrative citation: Lexicomp (2019)
Creator of app. (date). Entry title. In App title (Version) [Mobile app]. Vendor name (e.g. App Store). URL.
Example: Lexicomp. (2019). Drug interactions: ibuprofen and melatonin. In Lexicomp: evidence-based drug treatment information (7.4.1) [Mobile app]. App Store. https://apps.apple.com/us/app/lexicomp/id313401238
Parenthetical citation: (Lexicomp, 2019)
Narrative citation: Lexicomp (2019)
[Information taken from page 340, entries # 79 and 80, in the Publication Manual of the American Psychological Association, 7th ed.]
Always verify formatting of electronically generated citations with either the Online Writing Lab (OWL) at Purdue, the Publication Manual of the American Psychological Association (7th ed.), the APA blog. You may also consult with a librarian or Writing Center tutor regarding source citation formatting. Make sure to double space and insert the hanging indent for all sources.
Examples: Klymkowski, M. (2018, September 15). Can we talk scientifically about free will? Sci-Ed. https://blogs.plos.org/scied/2018/09/15/can-we-talk-scientifically-about-free-will/
Bal, R. (n.d.). Emotional charge of trauma. https://rolandbal.com/emotional-charge/
Example: APA Education [@APAEducation]. (2018, June 29). College students are forming mental-health clubs--and they're making a difference @washingtonpost [Thumbnail with link attached] [Tweet]. Twitter. https://twitter.com/apaeducation/status/1012810490530140161
Example: Gaiman, N., (2018, June 29). 100,000+ Rohingya refugees could be at serious risk during Bangladesh's monsoon season. My fellow UNHCR Goodwill Ambassador Cate Blanchett is [Image attached][Status update]. Facebook. http://bit.ly/2JQxPAD
Example: Right to Life of Idaho. (n.d.). Legislation. http://www.rtli.org/legislation.html
Examples: Graham, L. (2016, November 29). Mindfulness, self-compassion and resilience. Resources for Recovering Resilience. https://lindagraham-mft.net/mindfulness-self-compassion-and-resilience/
[Information taken from pages 320 and 350 through 352, sections 10.1, entry #17 & 10.16, entries #111 through #114, in the Publication Manual of the American Psychological Association, 7th ed.]
Always verify formatting of electronically generated citations with either the Online Writing Lab (OWL) at Purdue, the Publication Manual of the American Psychological Association (7th ed.), the APA blog. You may also consult with a librarian or Writing Center tutor regarding source citation formatting. Make sure to double space and insert the hanging indent for all sources.
Author, A. (person or organization who posted the video) (Year, Month Day video posted). Title of video [Video]. YouTube. URL
Example: Mind, the mental health charity. (2014, October 8). Mental health: In our own words [Video]. YouTube. https://www.youtube.com/watch?v=_y97VF5UJcc
Speaker name. (Year, Month). Title of video [Video].TED Conferences. URL
Example: Blum, N. (2017, January). The mental health system: A call for change [Video]. TED Conferences. https://www.youtube.com/watch?v=gI9Ddz0yW7o
[Information taken from pages 343 and 344, section 10.12, entries #88 and #90, in the Publication Manual of the American Psychological Association, 7th ed.]
Personal communications is defined as email correspondence, text messages, interviews, live speeches, classroom lectures, memos, etc.. Since these works are not easily replicated or recoverable, references to the content should be cited in the text.
Parenthetical citation: (T. Nguyen, personal communication, February 24, 2020)
Narrative citation: T. Nguyen (personal communication, February 24, 2020)
[Taken from page 260, section 8.9, in the Publication Manual of the American Psychological Association, 7th ed.]
Before you upload to file to Canvas you may want to download the file as a PDF rather than a MS Word document. This will better preserve the spacing and indentation.
You may also find the information on page 37 (entry #2.8) in the Publication Manual of the American Psychological Association, 7th ed.
Font type and size should be consistent throughout the entire document.
Margins should be 1" on all sides.
Entire document should be double-spaced.
[Information taken from pages 44-45 in the Publication Manual of the American Psychological Association, 7th ed.]
Section 2.27 (pages 47 to 49) defines the types and usage of headings.
"Punctuation establishes the cadence of a sentence, telling readers where to pause (comma, semicolon, and colon), stop (period and question mark), or take a detour (dash, parentheses, and square brackets). . . different kinds of punctuation indicate different kinds and lengths of pauses" (Publication Manual of the American Psychological Association, 2019, p.153).