APA (7th ed.) Citation

Zimbardo, P. G., & Weber, A. L. (1994). Psychology. Harper Collins.

Chicago Style (17th ed.) Citation

Zimbardo, Philip G., and Ann L. Weber. Psychology. New York, NY: Harper Collins, 1994.

MLA (9th ed.) Citation

Zimbardo, Philip G., and Ann L. Weber. Psychology. Harper Collins, 1994.