APA (7th ed.) Citation

Schultz, D. P. (1990). Theories of personality (4th ed.). Brooks/Cole.

Chicago Style (17th ed.) Citation

Schultz, Duane P. Theories of Personality. 4th ed. Pacific Grove, Calif: Brooks/Cole, 1990.

MLA (9th ed.) Citation

Schultz, Duane P. Theories of Personality. 4th ed. Brooks/Cole, 1990.