Phadermwattanakun, piyaporn, & Montaisong, T. (2024). The Role of Administrators Affecting Teaching Skills of Teachers in the 21 st Century Under The Suphanburi Secondary Educational Service Area Office. Mahachula Academic Journal, 11(1), 291–304. Retrieved from https://so04.tci-thaijo.org/index.php/JMA/article/view/268522