APA Style (7th ed.)
Cite the first author plus “et al.” in every citation; include all author names only if using "et al." in the in-text citation does not provide sufficient information to locate the author in the references (such as when "Patterson et al." refers to two different groups of authors). For example, include only the name of the first author listed in the reference, followed by et al., to format an in-text citation for the following resource:
Patterson, K., Grenny, J., McMillan, R., & Switzler, A. (2012). Crucial conversations: Tools for talking when the stakes are high (2nd ed.). McGraw-Hill. https://library.books24x7.com/toc.aspx?bookid=44095
- Parenthetical citation: (Patterson et al., 2012)
- Narrative citation: Patterson et al. (2012)
If an additional reference also begins with the same last names, such as: Patterson, K., Grenny, J., McMillan, R., Switzler, A., & Maxfield, D. (2018), citations to both resources should list all authors up and including any name which the two citations do not share:
- (Patterson, Grenny, McMillan, & Switzler, 2012)
- (Patterson, Grenny, McMillan, Switzler, & Maxfield, 2018)
In cases where more than three authors are included in a parenthetical citation, use an ampersand before the last author (American Psychological Association, 2020, p. 266).
References
American Psychological Association. (2020). Publication manual of the American Psychological Association (7th ed.). https://doi.org/10.1037/0000165-000
Patterson, K., Grenny, J., McMillan, R., Switzler, A., & Maxfield, D. (2018). Crucial accountability: Tools for resolving violated expectations, broken commitments, and bad behaviour (2nd ed.). McGraw-Hill. https://library.books24x7.com/toc.aspx?bookid=14317
