See how your Reference page should look!
APA citations always start with authors. Follow the format below, regardless of type of source (article, web page, etc)
One author:
Two authors
Comma and ampersand (&) after the first author
Three - Twenty authors
Surnames and initials for up to and including 20 authors. When there are two to 20 authors, use an ampersand before the final author’s name.
Twenty-one and more authors:
When there are 21 or more authors, include the first 19 authors’ names, insert an ellipsis (but no ampersand), and then add the final author’s name.
Author with a suffix:
Group authors can include corporations, government agencies, organizations, etc; and a group may publish in coordination with individuals. Here, you simply treat the publishing organization the same way you'd treat the author's name and format the rest of the citation as normal. Be sure to give the full name of the group author in your reference list, although abbreviations may be used in your text.
Entries in reference works ( e.g. dictionaries, thesauruses, and encyclopedias) without credited authors are also considered works with group authors.
Note: For a government agency, use the Government Agency as Author guidelines.
Government agency as author will most often occur if you are using a web page.
National Cancer Institute. (2019). Taking time: Support for people with cancer. U.S. Department of Health and
Human Services, National Institutes of Health. https://www.cancer.gov/publications/patient-education/takingtime.pdf
For a missing author, do not use “Anonymous” as the author unless the work is actually signed “Anonymous.” If the work is signed “Anonymous,” use “Anonymous” in the reference and in-text citation.
If your source doesn't have an author name, but is considered a "group author" (this may be a corporation or organization name, for example), use that company or organization name.
Contact Ms. James-Jenkin for more assistance.
Most of your citations should be from scholarly, peer-reviewed articles.
They will have the following components:
Follow the author formatting shown above in the Author box. Cite the rest of the article, using the information types listed above. Use the italics, periods, and commas as shown in the example below.
With an article number:
(Year of publication). Title of article. Title of Journal, Volume number(Issue number), Article number. DOI
With page numbers:
(Year of publication). Title of article. Title of Journal, Volume number(Issue number), Page numbers. DOI
Examples:
With page numbers and no DOI:
Cao, Y., Jiang, Z., Alexander, B., Cole-Dai, J., Savarino, J., Erbland, J., & Geng, L. (2022). On the potential fingerprint of the Antarctic ozone hole
in ice-core nitrate isotopes: A case study based on a South Pole ice core. Atmospheric Chemistry and Physics, 22(20), 13407-13422.
With article number and DOI:
Jerrentrup, A., Mueller, T., Glowalla, U., Herder, M., Henrichs, N., Neubauer, A., & Schaefer, J. R. (2018). Teaching medicine with the help of “Dr.
House.” PLoS ONE, 13(3), Article e0193972. https://doi.org/10.1371/journal.pone.0193972
Authors of Chapter. (Year). Chapter title. In S. Smith, A. Gomez, & P. Kumar (Eds.), Book title (pp. 10-22). Publisher. DOI (or URL)
This is for whole books written by one (or more) authors. It is NOT for books that are edited and individual chapters each have different authors. For that, see e-book chapters tab.
Author, A. (year). Title of the book: With a subtitle. Publisher. DOI
Prothero, D. (2007). Evolution: What the fossils say and why it matters. Columbia University.
Alberts, B., Heald, R., Johnson, A., Morgan, D., Raff, M., Roberts, K., & Walter, P. (2022). Molecular biology of the cell (7th ed.). W. W. Norton.
Palanikumar, K. (2024). Machine intelligence in mechanical engineering. Elsevier. https://doi.org/10.1016/C2022-0-00430-X
Conference proceeding formats will vary by the format in which the conference proceedings were published.
The most common are as a journal article and as a chapter in an ebook.
Contact Ms. James-Jenkin for help in deciphering which type of source you've got.
For a paper presented but not published in a journal or book:
Author, A. A. (Date). Title of Contribution [Type of contribution]. Conference Name, Location. DOI or URL if applicable
Bland, A. (2017, November). The implementation of a junior Samoan language programme in a South Island, New Zealand secondary school
context [Paper presentation]. Australian Association for Research in Education (AARE) Conference 2017, Canberra,
Australia. https://bit.ly/37DvrHR
Magazine articles are written for the general public (as opposed to scholarly articles which are written for professionals in the field).
Magazine articles are generally written by journalists or other general writers.
They may be in print or on the magazine's website.
Schaefer, N. K., & Shapiro, B. (2019, September 6). New middle chapter in the story of human evolution. Science, 365(6457), 981–982.
https://doi.org/10.1126/science.aay3550
For more information:
Whang, O. (2022, June 22). The many uses of CRISPR: A scientist tells all. The New York Times.
https://www.nytimes.com/2022/06/27/science/crispr-science-medical-research.html?searchResultPosition=4
Pre-print articles may or may not have completed the peer-review process.
There are many sources for pre-print articles, including, but not limited to:
In pre-prints, the article title is in italics. The source of the pre-print is not.
Because they are pre-prints, there is no journal tile, no volume/issue numbers, no page or article numbers.
Example:
Hampton, S., Rabagliati, H., Sorace, A., & Fletcher-Watson, S. (2017). Autism and bilingualism: A qualitative interview study of parents’ perspectives and experiences. PsyArXiv. https://doi.org/10.31234/osf.io/76xfs
If you have an older pre-print article, check to see if it was ever published through the peer-review process. Finalized, published articles should always be used if available. Contact Ms. James-Jenkin for help.
StatPearls is a tertiary source for medical information. You can think of it like a peer-reviewed Wikipedia article for health care. It is good for overviews of medical topics.
Gerriets, V., Anderson, J., & Nappe, T. M. (2021). Acetaminophen. In StatPearls. StatPearls Publishing. Retrieved April 4, 2023 from https://www.ncbi.nlm.nih.gov/books/NBK482369/
Format:
Author in standard author format. (Year). Title of the dissertation (Publication no. ) [Type of Dissertation, University Name]. Source of Dissertation. URL
Example:
Zambrano-Vazquez, L. (2016). The interaction of state and trait worry on response monitoring in those with worry and obsessive-compulsive
symptoms [Doctoral dissertation, University of Arizona]. UA Campus Repository. https://repository.arizona.edu/handle/10150/620615
Icahn School of Medicine. (2023). Hemoglobin. Mount Sinai. https://www.mountsinai.org/health-library/tests/hemoglobin
Do not create references or in-text citations for whole websites.
CRISPR. (2023, May 22). In Wikipedia. Retrieved June 1, 2023 from https://en.wikipedia.org/wiki/CRISPR