Naphasawan Ritdech and Sutthiporn Boonsung (2020) “The Development of Gesell’s Theory Activity Plan for Improving Ability to Use Small Muscles of Intellectual Disabilities Children ”, International Journal of Advanced Science and Technology, 29(9s), pp. 928 -932. Available at: https://sersc.org/journals/index.php/IJAST/article/view/13351 (Accessed: 2August2021).