Chuenchomnakjad, Saksit, Prataep Promseenong, and Prida Sema. “Creation and Efficiency Determination of a Modular Refrigeration and Air Conditioning Practice Set According to the National Skilled Labor Standards”. Journal of Technical and Engineering Education 15, no. 1 (January 3, 2024). Accessed May 17, 2024. https://so10.tci-thaijo.org/index.php/FTEJournal/article/view/887.