Hongkhao, Chuchat, Somkid Sroinam, and Phoom Praraksa. “Causal Factors Influencing Academic Administrative Effectiveness of Educational Opportunity Expansion Schools in Northeast”. Ph.D. in Social Sciences Journal 10, no. 1 (April 27, 2020): 70–86. Accessed February 4, 2023. https://so05.tci-thaijo.org/index.php/phdssj/article/view/133458.