Seathao, Kittipong, and Pongphop Phoojomjit. 2024. “The Development Guideline of School Administrators Characteristic in 21st Century Era Under Maha Sarakham Primary Educational Service Area Office 3: The Development Guideline of School Administrators Characteristic in 21st Century Era Under Maha Sarakham Primary Educational Service Area Office 3”. RATANABUTH JOURNAL 6 (1). Yasothon, Thailand:306-19. https://so07.tci-thaijo.org/index.php/rtnb/article/view/4027.