1. Alcantara, P. R. (1994). Effects of videotape instructional package on purchasing skills of children with autism. Exceptional Children, 61(1), 40–55.
2. American Psychiatric Association (1994). Diagnostic and statistical manual of mental disorders (4th ed.). Washington: American Psychiatric Association.
3. Baer, D. M., & Deguchi, H. (1985). Generalized imitation from a radical-behavioral viewpoint. In S. Reiss, & R. R. Bootzin (Eds.), Theoretical issues in behavior therapy (pp. 179–217). London: Academic.
4. Bondy, A., & Frost, L. (2001). A picture’s worth. PECS and other visual communication strategies in autism. Bethesda: Woodbine House.
5. Bondy, A. S. (1982). Effects of prompting and reinforcement of one response pattern upon imitation of a different modeled pattern. Journal of the Experimental Analysis of Behavior, 37(1), 135–141.