Cita APA (7a ed.)

Zimbardo, P. G., & Ruch, F. L. (1975). Psychology and life (9th ed.). Scott, Foresman and Company.

Cita Chicago Style (17a ed.)

Zimbardo, Philip G., y Floyd Leon Ruch. Psychology and Life. 9th ed. Glenview, Illinois [etc.]: Scott, Foresman and Company, 1975.

Cita MLA (9a ed.)

Zimbardo, Philip G., y Floyd Leon Ruch. Psychology and Life. 9th ed. Scott, Foresman and Company, 1975.