1. AAIDD. (2013).
http://aaidd.org/intellectual-disability/definition#.V7STQ455w7A
. Retrieved August 7, 2016.
2. Azrin, N. H., & Foxx, R. M. (1971). A rapid method of toilet training the institutionalized retarded. Journal of Applied Behavior Analysis, 4(2), 89–99.
3. Bailey, D. B., Hatton, D. D., Mesibov, G., Ament, N., & Skinner, M. (2000). Early development, temperament, and functional impairment in autism and fragile X syndrome. Journal of Autism and Developmental Disorders, 30(1), 49–57.
4. Baker, B. L., & Brightman, A. J. (1997). Steps to independence; teaching everyday skills to children with special needs. Baltimore: Paul H. Brookes.
5. Brazelton, T. B. (1962). A child oriented approach to toilet training. Pediatrics, 29, 121–128.