Cita APA (7th ed.)
Zimbardo, P. G., & Weber, A. L. (1994). Psychology (ed.). HarperCollins College Publishers.
Cita Chicago (17th ed.)
Zimbardo, Philip G., i Ann L. Weber. Psychology. ed. HarperCollins College Publishers, 1994.
Cita MLA (9th ed.)
Zimbardo, Philip G., i Ann L. Weber. Psychology. ed. HarperCollins College Publishers, 1994.
Atenció: Aquestes cites poden no estar 100% correctes.