Nenkoet S, Marie Cain P, Ngoiphuthon R. A Study of Development Guidelines for World Class Standard Schools Under the Secondary Educational Service Area Office Kalasin. edurmu [internet]. 2024 Dec. 29 [cited 2026 Sep. 13];21(3):141-52. available from: https://so06.tci-thaijo.org/index.php/edu-rmu/article/view/276874