1. Bandura, A. (1977).Social learning theory. Englewood Cliffs, New Jersey: Prentice-Hall.
2. Basmajian, J., & Blumenstein, R. (1980).Electrode placement in EMG biofeedback. Baltimore: Williams and Wilkins.
3. Beck, A. T. (1972).Depression: Causes and treatment. Philidelphia: University of Pennsylvania Press.
4. Beck, A. T. (1976).Cognitive therapy and the emotional disorders. New York: International Universities Press.
5. Beck, A. T., Ward, C. H., Mendelson, M., Mock, J., & Erbaugh, J. (1961). An inventory for measuring depression.Archives of General Psychiatry, 4 53?63.