Howard S. Friedman, Nancy E. Adler, Ross D. Parke, Christopher Peterson, Robert Rosenthal, Ralf Schwarzer, Roxane Cohen Silver, David Spiegel,
Encyclopedia of mental health Assessment and Therapy#R##N#Specialty Articles from the Encyclopedia of Mental Health. pp. 321- ,(1998) ,
10.1016/B978-012267806-6/50061-5