1. American Psychiatric Association (2022). Diagnostic and statistical manual of mental disorders (5th ed., text rev.). Arlington, VA.
2. American Psychological Association (2021). Autism spectrum disorder. American Psychological Association. Retrieved from https://www-apa-org.ezproxy.cul.columbia.edu/topics/autism-spectrum-disorder.
3. Armitage, P. (1955). Tests for linear trends in proportions and frequencies. Biometrics 11:375–386.
4. Autism and Developmental Disabilities Monitoring Network Surveillance Year 2000 Principal Investigators; Centers for Disease Control and Prevention. (2007). Prevalence of autism spectrum disorders--autism and developmental disabilities monitoring network, six sites, United States, 2000. Morbidity and Mortality Weekly Report: Surveillance Summaries, 56(1), 1–11. PMID: 17287714.
5. Autism and Developmental Disabilities Monitoring Network Surveillance Year 2002 Principal Investigators; Centers for Disease Control and Prevention. (2007). Prevalence of autism spectrum disorders--autism and developmental disabilities monitoring network, 14 sites, United States, 2002. Morbidity and Mortality Weekly Report: Surveillance Summaries,56(1), 12–28. PMID: 17287715.