Cita APA (7a ed.)

Ellis, A. (1991). The revised ABC's of rational-emotive therapy (RET). [s.n.].

Cita Chicago Style (17a ed.)

Ellis, Albert. The Revised ABC's of Rational-emotive Therapy (RET). [S.l.]: [s.n.], 1991.

Cita MLA (9a ed.)

Ellis, Albert. The Revised ABC's of Rational-emotive Therapy (RET). [s.n.], 1991.