Na Lumphun, S., Thongsookdee , R., Leosiripong , P. and Vittayakorn, S. (2022) “Enhancing self-confidence of the student with multiple disabilities using group process”, Journal Of Ratchasuda Institute for Research and Development of Persons With Disabilities. NakhonPathom, Thailand, 18(1), pp. 108–124. available at: https://so03.tci-thaijo.org/index.php/RSjournal/article/view/261674 (accessed: 28 September 2026).