1. Diagnostic and statistical manual;American Psychiatric Association,2000
2. A review of subtyping in autism and proposed dimensional classification model;Beglinger;Journal of Autism and Developmental Disorders,2001
3. An examination of the validity of social subtypes in Autism;Borden;Journal of Autism and Developmental Disorders,1994
4. Callahan, E. H., & Romanczyk, R. G. (2006). The development of norms for a new measure of social development. Unpublished masters thesis. Binghamton, NY: Binghamton University.
5. Subclassification of children with autism and pervasive developmental disorder;Castelloe;Journal of Autism and Developmental Disorders,1993