APA (7th ed.) Citation

Ryckman, R. M. (1989). Theories of personality (4η έκδ.). Brooks/Cole.

Chicago Style (17th ed.) Citation

Ryckman, Richard M. Theories of Personality. 4η έκδ. Pacific Grove: Brooks/Cole, 1989.

MLA (8th ed.) Citation

Ryckman, Richard M. Theories of Personality. 4η έκδ. Brooks/Cole, 1989.

Warning: These citations may not always be 100% accurate.