Chaiwong, O., Tongsookdee, R., Vittayakorn, S. and Leosiripong, P. (2024) “Picture Exchange Communication System Alternative Communication of Child with Intellectual Disabilities and Speech and Language Impairments”, Journal of Multidisciplinary in Humanities and Social Sciences, 7(4), pp. 2447–2464. available at: https://so04.tci-thaijo.org/index.php/jmhs1_s/article/view/271630 (accessed: 3 October 2026).