Cita APA (7a ed.)

Ellis, A. (1969). A cognitive approach to behavior therapy. [s.n.].

Cita Chicago Style (17a ed.)

Ellis, Albert. A Cognitive Approach to Behavior Therapy. [S.l.]: [s.n.], 1969.

Cita MLA (9a ed.)

Ellis, Albert. A Cognitive Approach to Behavior Therapy. [s.n.], 1969.