Frye, Richard E, Marie Tippett, Leanna Delhey, and John Slattery. “Test-Retest Reliability and Validity of the Autism Symptoms Questionnaire”. North American Journal of Medicine and Science 8, no. 4 (January 15, 2016). Accessed April 24, 2026. https://najms.com/index.php/najms/article/view/74.