Cita APA (7a ed.)

Freedheim, D. K., & Freudenberger, H. J. (1992). History of psychotherapy: A century of change. American Psychological Association.

Cita Chicago Style (17a ed.)

Freedheim, Donald K., y Herbert J. Freudenberger. History of Psychotherapy: A Century of Change. Washington, DC: American Psychological Association, 1992.

Cita MLA (9a ed.)

Freedheim, Donald K., y Herbert J. Freudenberger. History of Psychotherapy: A Century of Change. American Psychological Association, 1992.