1. The token economy: A motivational system for therapy and rehabilitation;AYLION,1968
2. Training parents as behavior therapists: A review;BERKOWITZ;Behavior Research and Therapy,1972
3. Behavioral feedback in the modification of brat behaviors;BERNAL;Journal of Nervous and Mental Disease,1969
4. Love is not enough;BETTELHEIM,1950
5. Christmas in Purgatory: A photographic essay on mental retardation;BLATT,1967