Cita APA (7th ed.)

Ullmann, L. P., & Krasner, L. (1975). A psychological approach to abnormal behavior (Second edition.). Prentice-Hall.

Cita Chicago (17th ed.)

Ullmann, Leonard P., i Leonard Krasner. A Psychological Approach to Abnormal Behavior. Second edition. New Jersey: Prentice-Hall, 1975.

Cita MLA (9th ed.)

Ullmann, Leonard P., i Leonard Krasner. A Psychological Approach to Abnormal Behavior. Second edition. Prentice-Hall, 1975.