Gaya APA

Schultz, D, P., Schultz, S, E. (2013). Theories of Personality (Ed. 10). USA: Wadsworth Cengage Learning.

Gaya MLA

Schultz, Duane, P.., Schultz, Sydney, Ellen. "Theories of Personality". Ed. 10 USA: Wadsworth Cengage Learning, 2013. Text.