1. Rotter JB: Social learning theory and clinical psychology. 1954, New York: Prentice Hall
2. Rotter JB: The development and application of social learning theory. Selected papers. 1982, New York: Praeger
3. Beck AT: Depression: Clinical, experimental and theoretical aspects. 1967, New York: Harper & Row
4. Beck AT: Cognitive models of depression. Journal of Cognitive Psychotherapy. 1987, 1: 5-37.
5. Seligman MEP: Helplessness. 1975, San Francisco: Freeman