Lerdpreecha S, Techawattanasiridumrong W. Guidelines for Development Roles of School Administrators in Academic Administration Under Secondary Education Office Service SingBuri Angthong Angthong Province. jma [Internet]. 2022 Aug. 28 [cited 2024 May 4];9(2):34-49. Available from: https://so04.tci-thaijo.org/index.php/JMA/article/view/254857