Munta, S., & Phoojomjit, P. (2023). The Development Guidelines for Teacher in Learning Management for 21st Century for Schools Under The Maha Sarakham Primary Education Service Area Office 1: The Development Guidelines for Teacher in Learning Management for 21st Century for Schools Under The Maha Sarakham Primary Education Service Area Office 1. RATANABUTH JOURNAL, 5(3), 194–209. retrieved from https://so07.tci-thaijo.org/index.php/rtnb/article/view/3622