1. Azrin, N. H., Schaeffer, R. M., & Wesolowski, M. D. (1976). A rapid method of teaching profoundly retarded persons to dress by a reinforcement-guidance method.Mental Retardation, 14, 29–33.
2. Bayley, N. (1969).Bayley Scales of Infant Development. San Antonio, TX: Psychological Corp.
3. Bennett, D. L., Gast, D. L., Wolery, M., & Schuster, J. (1986). Time delay and system of least prompts: A comparison in teaching manual sign production.Education and Training of the Mentally Retarded, 21, 117–129.
4. Billingsley, F. F., & Romer, L. T. (1983). Response prompting and the transfer of stimulus control: Methods, research, and a conceptual framework.Journal of the Association for the Severely Handicapped, 8, 3–12.
5. Billingsley, F. F., White, C. R., & Munson, R. (1980). Procedural reliability: A rationale and an example.Behavioral Assessment, 2, 229–241.