Cita APA (7th ed.)

Perry, S. M. (1999). Abnormal psychology. NTC/Contemporary Publishing.

Cita Chicago (17th ed.)

Perry, Susanna M. Abnormal Psychology. Lincolnwood (Chicago), Illinois: NTC/Contemporary Publishing, 1999.

Cita MLA (9th ed.)

Perry, Susanna M. Abnormal Psychology. NTC/Contemporary Publishing, 1999.