1. Baldwin, J. D., & Baldwin, J. I. (1981). Behavior principles in everyday life. Englewood Cliffs, NJ: Prentice-Hall.
2. Brewer, W. F. (1974). There is no convincing evidence for operant or classical conditioning in normal, adult, human beings. In W. Weimer & D. Palermo (Eds.), Cognition and the symbolic processes (pp. 1–42). Hillsdale, NJ: Erlbaum.
3. Brownstein, A. J., & Shull, R. L. (1985). A rule for the use of the term, “Rule-governed behavior.” The Behavior Analyst, 8, 265–267.
4. Bruner, J. S., Goodnow, J., & Austin, G. (1956). A study of thinking. New York: Wiley.
5. Catania, A.C. (1984). Learning. Englewood Cliffs, NJ: Prentice-Hall.