1. Learned helplessness in humans: Critique and reformulation;Abramson;Journal of Abnormal Psychology,1978
2. Cue-learning and problem-learning strategies in normal and retarded children;Achenbach;Child Development,1968
3. Personality development in retarded persons.;Balla,1979
4. Impact of institutional experience on the behavior and development of retarded persons.;Balla,1982
5. Social foundations of thought and action: A social cognitive theory.;Bandura,1986