1. AbleData (2006). Alpha interactive language series–gator super sentences. Retrieved from http://www.abledata.com
2. Diagnostic and statistical manual of mental disorders;American Psychiatric Association,2000
3. Team up with Timo: Animated learning tutor;Animated Speech Corporation,2005
4. Acquisition of literacy skills by children with severe disability;*Basil;Child Language Teaching and Therapy,2003
5. Computer-assisted instruction for autistic children;Bernard-Opitz;Annals Academy of Medicine,1990