Ngamzhaluai, Jaruek, and Samret Yurachai. “Administrative Strategies for Effectiveness Elementary Schools in Khon Kean”. Dhammathas Academic Journal 19, no. 4 (December 26, 2019): 209–218. accessed January 6, 2026. https://so06.tci-thaijo.org/index.php/dhammathas/article/view/157880.