1. BIJOU, S.W., & BAER, D. M. 1961. Child development, Volume 1. New York: Appleton-Century-Crofts.
2. BURGESS, R. L. & AKERS, R. L. In Press. “A Differential Association-Reinforcement Theory of Criminal Behavior.” Social Problems.
3. KELLER, F. S. 1954. Learning: reinforcement theory. New York: Random House.
4. REESE, E. P. 1964. Experiments in operant behavior. New York: Appleton-Century-Crofts.
5. SKINNER, B. F. 1938. The behavior of organisms. New York: Appleton-Century-Crofts.