APA (7th ed.) Citation

Schultz, D. P., & Schultz, S. E. (2017). Theories of personality (11th ed.). Cengage Learning.

Chicago Style (17th ed.) Citation

Schultz, Duane P., and Sydney Ellen Schultz. Theories of Personality. 11th ed. Boston: Cengage Learning, 2017.

MLA (9th ed.) Citation

Schultz, Duane P., and Sydney Ellen Schultz. Theories of Personality. 11th ed. Cengage Learning, 2017.