Walen, Susan R. A practitioner's guide to rational-emotive therapy / Susan R. Walen, Raymond DiGiuseppe, Richard L. Wessler. - New York: Oxford University Press, 1980. - xvi, 294 p. ; 21 cm. Bibliography: p. 280 -284. ISBN: 0195026675 0195026683 (pbk.) Subjects--Topical Terms: Rational-emotive psychotherapy.