You’re wondering what the APA rule is for citing twenty‑plus authors in your nursing capstone, and you need a clear answer now so the citation won’t cost you points.
How do I format an in‑text citation when a source has more than twenty authors?
APA 7th edition treats any source with 21 or more authors the same way you would treat a source with three or more authors: you list the first author’s surname followed by et al. The first time you cite the work in the text, you do not write out the whole author list. For example, a massive study published by Thompson and 23 colleagues in 2022 would appear as:
(Thompson et al., 2022)
If you are quoting directly, include the page number after the year:
(Thompson et al., 2022, p. 45)
When the citation appears at the beginning of a sentence, the same rule applies:
Thompson et al. (2022) found that …
Only when a source has one or two authors do you list both surnames. Anything three or more triggers the et al. shortcut, regardless of whether the total is 3, 12, or 45. This keeps the narrative readable and matches what graders look for on the rubric under “Citation Accuracy.”
What does the reference list entry look like for a study with twenty‑plus authors?
In the reference list you still write out the first 19 authors’ names in full, then add an ellipsis ( … ) and the final author’s name. No ampersand appears before the ellipsis, but it does appear before the last author. Using the same Thompson study as an example, the entry would be:
Thompson, A., Brown, B., Chen, C., Davis, D., Evans, E., Garcia, F., Hall, G., Irwin, H., Jones, I., Kim, J., Lee, K., Miller, L., Nguyen, M., O’Neil, N., Patel, O., Quinn, P., Rodriguez, Q., Singh, R., … Zhang, Z. (2022). Title of the article. Journal of Nursing Research, 15(3), 210‑225.
The ellipsis replaces all authors from the 20th through the second‑to‑last author. The final author after the ellipsis is always listed with a comma before the year. The journal title and volume are italicized; the issue number is in parentheses, not italicized. This exact format satisfies the “Reference List Formatting” criterion on most nursing capstone rubrics.
Which terminology does my nursing capstone rubric expect for author citations?
Rubrics often call out specific terms such as “author‑date citation,” “in‑text citation,” and “reference list entry.” Under the “Citation Accuracy” row you’ll see language like “uses correct APA author‑date format for works with ≥ 20 authors.” The phrase “author‑date” signals that the year must follow the author name(s) inside parentheses. The rubric may also require “et al.” to be italicized, which APA mandates. If the rubric lists “use of ellipsis in reference list,” that is the exact cue to apply the 19‑author rule followed by an ellipsis and the final author.
What technical pitfalls can cause my citation to be marked wrong?
One common failure mode is forgetting the ellipsis in the reference list. Some word‑processing tools automatically replace three periods with a single ellipsis character (…); APA wants three separate periods with a space before and after, not the single‑character ellipsis. Another trap is placing an ampersand (&) before the ellipsis; the correct format is “… LastAuthor.” A third issue is capitalizing “et al.” – it must be lower‑case and italicized. Finally, the reference list must be double‑spaced with a hanging indent; a missing hanging indent often triggers a formatting deduction.
How can I avoid integrity flags while handling long author lists?
Similarity‑checking software scans the reference list for exact matches. If you type the author list manually and accidentally omit a comma or mis‑order a name, the software may flag the entry as a mismatch, which can look like plagiarism to a grader. The safest route is to copy the citation directly from the article’s DOI page or from a trusted database (PubMed, CINAHL) and then edit it to match APA’s 19‑author rule. Keep the original spelling of each author’s surname, especially hyphens and apostrophes, because changing them can trigger a false positive. When you use et al. in the text, do not add “and others” – that extra wording is a red flag for non‑APA style.
What step‑by‑step plan can I follow tonight to get the citation right?
Use this quick checklist to finish the citation before you submit:
- Locate the article’s full author list on the publisher’s page.
- Count the authors. If the count is 21 or more, note that you will need an ellipsis in the reference entry.
- Copy the first 19 surnames exactly as they appear, including commas and periods.
- Insert an ellipsis (three periods with a space before and after) after the 19th author.
- Add the final author’s surname, a comma, then the year in parentheses.
- Write the article title in sentence case, the journal title in title case and italics, the volume in italics, the issue in parentheses, and the page range.
- In the manuscript body, replace the full author list with “FirstAuthor et al. (Year).”
- Run a final double‑spacing check and verify that the reference entry has a hanging indent.
Following these steps will keep you within the “Citation Accuracy” and “Reference List Formatting” rows of the capstone rubric, and it eliminates the most common technical errors.
| Element | When ≤ 2 authors | When 3‑20 authors | When ≥ 21 authors |
|---|---|---|---|
| In‑text citation | List both surnames (Smith & Lee, 2021) | First author + et al. (Smith et al., 2021) | First author + et al. (Smith et al., 2021) |
| Reference list authors | Both names, ampersand before last | All names, ampersand before last | First 19 names, ellipsis, final name |
| Ellipsis usage | Not applicable | Not applicable | Three periods with spaces ( … ) |
| Italicization | None | et al. italicized | et al. italicized |
Bottom line: for any source with twenty‑plus authors, list the first 19 in the reference list, add an ellipsis, then the last author; in the text, use the first author’s surname followed by et al. and you’ll meet the APA rule and the capstone rubric.