APA (7th ed.) Citation

Zimbardo, P. G., & Weber, A. L. (1997). Psychology (2nd ed.). Longman.

Chicago Style (17th ed.) Citation

Zimbardo, Philip G., and Ann L. Weber. Psychology. 2nd ed. New York [etc.]: Longman, 1997.

MLA (9th ed.) Citation

Zimbardo, Philip G., and Ann L. Weber. Psychology. 2nd ed. Longman, 1997.