Georgia. Department of Education. Office of Instructional Services. Division of Special Programs. Program for Exceptional Children. "Severely and trainable mentally retarded resource manuals for program for exceptional children, volume I [1980]." University of Georgia. Map and Government Information Library. 1980, https://dlg.galileo.usg.edu/do:dlg_ggpd_i-ga-be300-pi5-bm1-b1980-br4.

Georgia. Department of Education. Office of Instructional Services. Division of Special Programs. Program for Exceptional Children (1980). Severely and trainable mentally retarded resource manuals for program for exceptional children, volume I [1980]. Retrieved from https://dlg.galileo.usg.edu/do:dlg_ggpd_i-ga-be300-pi5-bm1-b1980-br4

Georgia. Department of Education. Office of Instructional Services. Division of Special Programs. Program for Exceptional Children. "Severely and trainable mentally retarded resource manuals for program for exceptional children, volume I [1980]." 1980. July 31, 2025. https://dlg.galileo.usg.edu/do:dlg_ggpd_i-ga-be300-pi5-bm1-b1980-br4.