Uthaisan, T., S. Sriputtarin, and J. Kheawnamchum. “Administrative Factors Affecting Eaching and Learning Management in the Situation of the Coronavirus Covid -19 Epidermic of Shools Under Nakhonphanom Primary Educational Service Area office 2”. Journal of Education Rajabhat Maha Sarakham University, vol. 19, no. 1, May 2022, pp. 175-89, https://so06.tci-thaijo.org/index.php/edu-rmu/article/view/256462.