Chuenchomnakjad, Saksit, Prataep Promseenong, and Prida Sema. 2024. “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 (1). https://so10.tci-thaijo.org/index.php/FTEJournal/article/view/887.