APA (7th ed.) Citation
Ryckman, R. M. (1989). Theories of personality (3rd ed.). Brooks/Cole Publishing Company.
Chicago Style (17th ed.) Citation
Ryckman, Richard M. Theories of Personality. 3rd ed. California: Brooks/Cole Publishing Company, 1989.
MLA (9th ed.) Citation
Ryckman, Richard M. Theories of Personality. 3rd ed. Brooks/Cole Publishing Company, 1989.
Warning: These citations may not always be 100% accurate.