U-senyang, Sarannee, and Sofia Sama-alee. 2020. “Operations Management Charcoal Briquette for Community Enterprise Development of Coconut Processing in Ban Thon Aman, Narathiwas Province”. WMS Journal of Management 9 (3), 42-53. https://so06.tci-thaijo.org/index.php/wms/article/view/243624.