U-senyang, Sarannee, and Sofia Sama-alee. “Operations Management Charcoal Briquette for Community Enterprise Development of Coconut Processing in Ban Thon Aman, Narathiwas Province”. WMS Journal of Management 9, no. 3 (July 30, 2020): 42-53. Accessed October 31, 2020. https://so06.tci-thaijo.org/index.php/wms/article/view/243624.