Cita APA (7a ed.)

Wittig, A. F., & Sinnett, L. M. (2002). Introduction to psychology. McGraw-Hill.

Cita Chicago Style (17a ed.)

Wittig, Arno F., y Laura M. Sinnett. Introduction to Psychology. New York: McGraw-Hill, 2002.

Cita MLA (8a ed.)

Wittig, Arno F., y Laura M. Sinnett. Introduction to Psychology. McGraw-Hill, 2002.