Cita APA (7th ed.)

Beck, A. T. (1979). Cognitive therapy of depression. Guilford Press.

Cita Chicago (17th ed.)

Beck, Aaron T. Cognitive Therapy of Depression. New York: Guilford Press, 1979.

Cita MLA (9th ed.)

Beck, Aaron T. Cognitive Therapy of Depression. Guilford Press, 1979.