APA

Walen S., DiGuiseppe R. & Dryden W. (1992). A practitioners guide to rational : emotive therapy. Estados Unidos: Oxford University Press.

Chicago

Walen Susan, DiGuiseppe Raymond and Dryden Windy. 1992. A practitioners guide to rational : emotive therapy. Estados Unidos: Oxford University Press.

Harvard

Walen S., DiGuiseppe R. and Dryden W. (1992). A practitioners guide to rational : emotive therapy. Estados Unidos: Oxford University Press.

MLA

Walen Susan, DiGuiseppe Raymond and Dryden Windy. A practitioners guide to rational : emotive therapy. Estados Unidos: Oxford University Press. 1992.