Cita APA (7a ed.)

Powell, D. J. (1993). Clinical supervision in alcohol and drug abuse counseling: Principles, models, methods. Lexington Books [u.a.].

Cita Chicago Style (17a ed.)

Powell, David J. Clinical Supervision in Alcohol and Drug Abuse Counseling: Principles, Models, Methods. New York: Lexington Books [u.a.], 1993.

Cita MLA (9a ed.)

Powell, David J. Clinical Supervision in Alcohol and Drug Abuse Counseling: Principles, Models, Methods. Lexington Books [u.a.], 1993.