Sumalai, K., Supavarasuwat, P., & Maunsaiyat, S. (2019). AN E-LEARNING LESSON ON BASIC INDOOR ELECTRICITY FOR LEVEL 1 INDOOR ELECTRICIANS. Journal of Industrial Education, 18(2), 188–196. Retrieved from https://ph01.tci-thaijo.org/index.php/JIE/article/view/180665