Phitake, Wasana, and Tanyatorn Sriwichien. 2019. “Approade for Teacher Development in Teaching and Learning of Local Self-Sufficient Schools for Schools Under the Municipality of Udon Thani”. Journal of Education Khon Kaen University (Graduate Studies Research) 13 (2):125-35. https://so02.tci-thaijo.org/index.php/EDGKKUJ/article/view/216856.