Vittayakorn, Soisuda, Nuntanee Satiansukpong, Sasithon Sung-U, Methisa Pongsaksri, Chitaya Phiraban, and Daranee Sasat. 2009. “The effect of Thai elephant–assisted therapy program on sensory processing function in persons with autism”. Journal of Associated Medical Sciences 42 (1):57. https://he01.tci-thaijo.org/index.php/bulletinAMS/article/view/60096.