Komolwanich S, Sonsupee S. Digital Leadership of School Administrator Affecting Teacher Competency for 21 Century Under The Secondary Educational Service Area Office 23. GS KKU HS [internet]. 2021 Oct. 17 [cited 2026 Sep. 14];9(2):159-67. available from: https://so04.tci-thaijo.org/index.php/gskkuhs/article/view/241608