Cita APA (7a ed.)

Garfield, S. L. (1989). The practice of brief psychotherapy. Pergamon Press.

Cita Chicago Style (17a ed.)

Garfield, Sol Louis. The Practice of Brief Psychotherapy. New York [etc.]: Pergamon Press, 1989.

Cita MLA (9a ed.)

Garfield, Sol Louis. The Practice of Brief Psychotherapy. Pergamon Press, 1989.