APA (7th ed.) Citation

Schultz, D. P., & Schultz, S. E. (2001). Theories of personality (7th ed.). Wadsworth.

Chicago Style (17th ed.) Citation

Schultz, Duane P., and Sydney Ellen Schultz. Theories of Personality. 7th ed. Australia: Wadsworth, 2001.

MLA (9th ed.) Citation

Schultz, Duane P., and Sydney Ellen Schultz. Theories of Personality. 7th ed. Wadsworth, 2001.