Ballerini P, Berger R, Fenaux P, Degos L. All-trans retinoic acid as a differentiation therapy for acute promyelocytic leukemia. I. Clinical results (PDF). Blood
Cathy A. (2006). The Art Therapy Sourcebook (2nd ed.). New York: McGraw-Hill. ISBN 0071468277. Malchiodi, Cathy A. (2003). Handbook of Art Therapy. New