1. Bolles, R.C. (1993):The story of psychology: A thematic history. Pacific Grove, Calif.: Brooks/Cole Pub. Co.
2. Christian, K.M. & Thompson, R.F. (2003). Neural substrates of eyeblink conditioning: Acquisition and retention.Learning and Memory, 11, 427–455.
3. Coon, D.J. (1982). Eponymy, obscurity, Twitmyer, and Pavlov.Journal of the History of the Behavioral Sciences, 18, 255–262.
4. Gormezano, I., Prosy, W.F., & Thompson, R.F. (1987).Classical Conditioning. New Jersey: Lawrence Erlbaum Associates.
5. Hilgard, E.R. (1974). Ernest Ropiequet Hilgard, InA History of Psychology in Autobiography Volume VI. (Ed. Gardner Lindzey), New Jersey: Prentice-Hall, Inc.