Thongsri, Phattanapong, Buntarika Bulpakdi, and Jurairat Sudrung. “Administrators’ Supervisory Skills That Influence the World Class Standard Outcomes of Secondary Schools”. An Online Journal of Education 18, no. 2 (December 31, 2023): OJED–18. Accessed May 14, 2024. https://so01.tci-thaijo.org/index.php/OJED/article/view/266962.