La-armat, Wijitra, Wanphen Nanthasri, and Apisit Somsrisuk. “A study of the Environmental Management in School Components”. Journal of Graduate MCU KhonKaen Campus 11, no. 4 (December 30, 2024): 221–233. accessed September 12, 2026. https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/272056.