Skip to Main Content
Ask A Librarian

APA 7th Edition Citation Style Guide

A quick guide to using APA citation style

0 Authors

If a reference does not list an author, use the article title in the author position


Drought tolerance in crop plants can conserve water, energy. (2008, January 9). Southeast Farm Press. p. 4.

2-20 Authors

If a reference has between 2 and 20 authors, list each name in the order it appears on the source. Use an ampersand (&) before the final name.  


Cortés, A. J., Monserrate, F. A., Ramírez-Villegas, J., Madriñán, S., & Blair, M. W. (2013). Drought tolerance in wild plant populations: The case of common beans (Phaseolus vulgaris L.). Plos ONE, 8(5), 1-10. doi:10.1371/journal.pone.0062898

21 or More Authors

If a reference has 21 or more authors, list the first 19 names followed by an ellipses and the final name listed.


Wiskunde, B., Arslan, M., Fischer, P., Nowak, L., Van den Berg, O., Coetzee, L., Juárez, U., Riyaziyyat, E., Wang, C., Zhang, I., Li, P., Yang, R., Kumar, B., Xu, A., Martinez, R., McIntosh, V., Ibáñez, L. M., Mäkinen, G., Virtanen, E., . . . Kovács, A. (2019). Indie pop rocks mathematics: Twenty One Pilots, Nicolas Bourbaki, and the empty set.  Journal of Improbable Mathematics, (1), 1935–1968.

Group Author

If a reference was authored by a company, organization, or other group, use the group’s formal name. 


Pew Center on Global Climate Change. (2010). The case for action: Creating a clean energy future.