Yangyuen, Sermsak, Worakamol Wisetsri, and Preeda Atawinijtrakarn. “A Development Model for Competency Improvement Support Maintenance Managers Food Processing Plant”. Rajapark Journal 16, no. 46 (May 20, 2022): 328–341. Accessed April 20, 2024. https://so05.tci-thaijo.org/index.php/RJPJ/article/view/256136.