1. Asus (2009) Mini notebook computer: http://www.asus.com/product.aspx?P_ID=txYWVcX4F8yuJQDD Retrieved 09.17.09.
2. Azrin, N. H., Bugle, C., & O’Brien, F. (1971). Behavioral engineering: two apparatuses for toilet training retarded children. Journal of Applied Behavior Analysis, 4, 249–253.
3. Azrin, N. H., & Foxx, R. M. (1971). A rapid method of toilet training the institutionalized retarded. Journal of Applied Behavior Analysis, 4, 89–99.
4. Bettison, S. (1982). Toilet training to independence for the handicapped: A manual for trainers. Springfield, IL: Charles C Thomas.
5. Brodwin, M. G., Star, T., & Cardoso, E. (2004). Computer assistive technology for people who have disabilities: Computer adaptations and modifications. Journal of Rehabilitation, 70, 28–33.