Thongbai, Jirachaya. 2023. “A Guidelines for Development of Educational Quality Assurance Systems in 21st Century Based on Missions of Moral and Intellectual Cultivation Universities: A Guidelines for Development of Educational Quality Assurance Systems in 21st Century Based on Missions of Moral and Intellectual Cultivation Universities”. RATANABUTH JOURNAL 5 (1). Yasothon, Thailand:664-80. https://so07.tci-thaijo.org/index.php/rtnb/article/view/2589.