Somboonsil, Thidarut, Suwat Waranusat, and Chucheep Phuttaprasert. 2023. “A Structural Equation Model of Management Factors Educational Quality Development for Small Secondary Schools Under Educational Service Phichit”. Rajapark Journal 17 (51). Bangkok, Thailand:18-34. https://so05.tci-thaijo.org/index.php/RJPJ/article/view/258705.