Satra, Prasit. “Personnel Development Model for Quality Development Education Service Area Office to 3 Success of Roi-Et Primary Educational Service Area Office 2”. SSKRU Research and Development Journal 7, no. 2 (December 21, 2020): 19–30. Accessed May 5, 2024. https://so01.tci-thaijo.org/index.php/sskru-resarch/article/view/245190.