Vadhanavikkit, P., N. Patjanasoontorn, S. Rongbudsri, J. Singkhornard, and P. Unprai. “Intelligence Quotient of Child and Adolescent Patients With Autistic Disorder in Srinagarind Hospital, Khon Kaen”. Journal of the Psychiatric Association of Thailand, vol. 62, no. 2, July 2017, pp. 97-106, https://he01.tci-thaijo.org/index.php/JPAT/article/view/92323.