ขำทับ ภ. (2019) “The Development of Vocational Competency-Based Learning Management System”, Journal of Education Studies, Chulalongkorn University. Bangkok, Thailand, 47(3), pp. 290–308. available at: https://so02.tci-thaijo.org/index.php/EDUCU/article/view/218870 (accessed: 11 September 2026).