Chaiyasombat, Dr. Witchayaphan. 2017. “Factor Affecting to Community’s Garbage Disposal According to Philosophy of Sufficiency Economy in ChiangYuen District, Mahasarakarm Province”. Journal for Developing the Social and Community 4 (2). Bangkok, Thailand:109-25. https://so03.tci-thaijo.org/index.php/rdirmu/article/view/209743.