1. American Academy of Pediatric Dentistry (AAPD) 2006 Dental care for a special child http://www.aapd.org/
2. Dental disease: A continuing education problem for the disabled individual;Callahan;Journal of Special Education,1983a
3. The effectiveness of instructional programming on the reduction of dental diseases in mentally retarded individuals;Callahan;Mental Retardation,1983b
4. Campbell , J. Y. Esser , B. F. Flaugher , R. L. 1982 Evaluation of a program for training dentists in the care of handicapped patients Princeton, NJ Educational Testing Service