APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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