Cita APA (7th ed.)

Bellack, A. S., & Hersen, M. (1977). Behavior modification: An introductory textbook. Williams & Wilkins.

Cita Chicago (17th ed.)

Bellack, Alan S., i Michel Hersen. Behavior Modification: An Introductory Textbook. Baltimore: Williams & Wilkins, 1977.

Cita MLA (9th ed.)

Bellack, Alan S., i Michel Hersen. Behavior Modification: An Introductory Textbook. Williams & Wilkins, 1977.