1. Agras, W., Chapin, H., & Oliveau, D. The natural history of phobia. Archives of General Psychiatry, 1972, 26, 315–317.
2. Allen, K., Hart, B., Buell, S., Harris, R., & Wolf, M. Effects of social reinforcement on isolate behavior of a nursery school child. Child Development, 1964, 35, 511–518.
3. Ayllon, T., Smith, D., & Rogers, M. Behavioral management of school phobia. Journal of Behavior Therapy and Experimental Psychiatry, 1970, 1, 125–138.
4. Bandura, A. Principles of behavior modification. New York: Holt, Rinehart & Winston, 1969.
5. Bandura, A., Grusec, J., & Menlove, F. Vicarious extinction of avoidance behavior. Journal of Personality and Social Psychology, 1967, 5, 16–23.