"Facts, Autism Spectrum Disorders - NCBDDD." Centers for Disease Control and Prevention. Web. 02 Dec. 2010. <http://www.cdc.gov/ncbddd/autism/facts.html>."Autism Sharing child and youth development knowledge, volume 24, number 2, 2010, Autism Spectrum Disorders Diagnosis, Prevalence, and Services for Children and Families"Autism Spectrum Disorders (Pervasive Developmental Disorders)." NIMH · National Institute of Mental Health. Web. <http://www.nimh.nih.gov/Publicat/autism.cfm>.