1. Achenbach, T. M., & Rescorla, L. A. (2000). Manual for the ASEBA preschool forms & profiles. Burlington, VT: University of Vermont, Research Center for Children, Youth, and Families.
2. American Board of Pediatrics. (2011). Number of ABP developmental-behavioral pediatrics diplomates (ever certified) by state 2011. Retrieved July 6, 2012 https://www.abp.org/abpwebsite/stats/wrkfrc/menu1.htm .
3. American Psychiatric Association (APA). (2000). Diagnostic and statistical manual of mental disorders (4th ed.). Washington, DC: Author. doi: 10.1176/appi.books.9780890423349 .
4. Baron-Cohen, S., Wheelwright, S., Cox, A., Baird, G., Charman, T., Swettenham, J., et al. (2000). Early identification of autism by the checklist for autism in toddlers (CHAT). Journal of the Royal Society of Medicine, 93, 521–525.
5. Canal-Bedia, R., Garcia-Primo, P., Martin-Cilleros, M. V., Santos-Borbujo, J., Guisuraga-Fernandez, Z., Herraez-Garcia, L., et al. (2011). Modified checklist for autism in toddlers: Cross-cultural adaptation and validation in Spain. Journal of Autism and Developmental Disorders, 41(10), 1342–1351. doi: 10.1007/s10803-010-1163-z .