Dyfyniad APA

Governors State University. Communication Services, American Psychological Association, Beck, J. S., & Carlson, J. (2006). Cognitive therapy. American Psychological Association.

Dyfyniad Arddull Chicago

Governors State University. Communication Services, American Psychological Association, Judith S. Beck, and Jon Carlson. Cognitive Therapy. Washington, D.C: American Psychological Association, 2006.

Dyfyniad MLA

Governors State University. Communication Services, et al. Cognitive Therapy. American Psychological Association, 2006.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.