APA (7th ed.) Citation

Worchel, S., Cooper, J., & Goethals, G. R. (1991). Understanding social psychology (5th ed.). Brooks/Cole Pub..

Chicago Style (17th ed.) Citation

Worchel, Stephen, Joel Cooper, and George R. Goethals. Understanding Social Psychology. 5th ed. Pacific Grove, Calif.: Brooks/Cole Pub., 1991.

MLA (9th ed.) Citation

Worchel, Stephen, et al. Understanding Social Psychology. 5th ed. Brooks/Cole Pub., 1991.