APA (7th ed.) Citation

Schultz, D. P., & Schultz, S. E. (2009). Theories of personality (9th ed.). Thomson/Wadsworth.

Chicago Style (17th ed.) Citation

Schultz, Duane P., and Sydney Ellen Schultz. Theories of Personality. 9th ed. Australia: Thomson/Wadsworth, 2009.

MLA (9th ed.) Citation

Schultz, Duane P., and Sydney Ellen Schultz. Theories of Personality. 9th ed. Thomson/Wadsworth, 2009.