APA (7th ed.) Citation

Ryckman, R. M. (1982). Theories of personality (2nd ed.). Brooks/Cole.

Chicago Style (17th ed.) Citation

Ryckman, Richard M. Theories of Personality. 2nd ed. Monterey, Calif: Brooks/Cole, 1982.

MLA (9th ed.) Citation

Ryckman, Richard M. Theories of Personality. 2nd ed. Brooks/Cole, 1982.