Chuayrak, Sukanya, Wisuit Sunthonkanokpong, and Paiboon Pongwongtragull. 2019. “COMPETENCY - BASED SKILLS TRAINING FOR REPAIRING ELECTRICAL APPLIANCES PROVINDING HEAT ENERGY”. Journal of Industrial Education 18 (1):170-77. https://ph01.tci-thaijo.org/index.php/JIE/article/view/154244.