Na Chiangmai, P., Y. Yaboonthong, C. Puthaprasert, and P. Rupavijetra. “Administration model of civil state schools to improve the quality of education”. Interdisciplinary Research Review, vol. 15, no. 5, Oct. 2020, pp. 16-23, https://ph02.tci-thaijo.org/index.php/jtir/article/view/240589.