Cita APA (7a ed.)

American Psychological Association, Harvey, J. H., & Parks, M. M. (1984). Psychotherapy research and behavior change. American Psychological Association.

Cita Chicago Style (17a ed.)

American Psychological Association, John H. Harvey, y Marjorie M. Parks. Psychotherapy Research and Behavior Change. Washington: American Psychological Association, 1984.

Cita MLA (9a ed.)

American Psychological Association, et al. Psychotherapy Research and Behavior Change. American Psychological Association, 1984.