Cita APA (7a ed.)

Hersen, M., & Sledge, W. H. (2002). Encyclopedia of psychotherapy. Academic Press.

Cita Chicago Style (17a ed.)

Hersen, Michel, y William H. Sledge. Encyclopedia of Psychotherapy. Amsterdam ; Boston: Academic Press, 2002.

Cita MLA (8a ed.)

Hersen, Michel, y William H. Sledge. Encyclopedia of Psychotherapy. Academic Press, 2002.