Cita APA (7a ed.)

Wills, F., & Sanders, D. (1997). Cognitive therapy: Transforming the image. Sage.

Cita Chicago Style (17a ed.)

Wills, Frank, y Diana Sanders. Cognitive Therapy: Transforming the Image. London [etc.]: Sage, 1997.

Cita MLA (9a ed.)

Wills, Frank, y Diana Sanders. Cognitive Therapy: Transforming the Image. Sage, 1997.