Sawangphon N, Vaisopha K. Servant Leadership of School Administrators Under Development of Learning Encouragement, Education Ministry, Loei Province: Servant Leadership of School Administrators Under Development of Learning Encouragement, Education Ministry, Loei Province. rtnb [internet]. 2024 Dec. 31 [cited 2026 Jan. 7];6(3):58-71. available from: https://so07.tci-thaijo.org/index.php/rtnb/article/view/5439