1. Azrin, N. (1993). Discussant’s comments on J. Gewirtz (1993). Infant protests: Protests during maternal departures and during separations from mothers as a conditioned discriminative operant. In Proceedings of the 13th Annual Convention of the Florida Association for Behavior Analysis (p. 105). Fort Lauderdale, FL.
2. Bennett, W. J. (1994). The index of leading cultural indicators: Facts and figures on the state of American society. New York: Simon & Schuster.
3. Bijou, S. W., & Baer, D. M. (1965) Child development, Vol. 2: Universal stage of infancy. New York : Appleton-Century-Crofts.
4. Bijou, S. W. (1983). The prevention of mild and moderate retarded development. In F. J. Menolascino, R. Neman, & J. A. Stark (Eds.), Curative aspects of mental retardation: Biomedical and behavioral advances (pp. 223–241). Baltimore: Brookes.
5. Bijou, S. W. (1993). Behavior analysis of child development. Reno: Context Press.