1. Acorn Magazine. Governors State University, Park Forest South Ill. 60466.
2. Azrin, H., & Holz, W. C. Punishment. In W. K. Honig (Ed.), Operant behavior: Areas of research and application. New York: Appleton-Century-Crofts, 1966.
3. Bartell, T. Political orientations and public response to the energy crisis. Social Science Quarterly, 1976, 57, 430–436.
4. Becker, L. J. Reducing residential energy consumption through feedback and goal setting. Center for Environmental Studies, The Engineering Quandrangle, Princeton University, Princeton, N.J. 08540.
5. Bem, D. J. Self-perception theory. In L. Berkowitz, (Ed.), Advances in experimental social psychology. New York: Academic, 1972.