Jumroonsiri เอกบุรุษ, Nuntee ศักดินาภรณ์, and Jitthaisong อรทัย. “GUIDELINES FOR MANAGEMENT OF ZERO WASTE SCHOOL UNDER LOEI PRIMARY EDUCATIONAL SERVICE AREA OFFICE 1”. Integrated Social Science Journal 4, no. 10 (April 30, 2024): 13–31. Accessed November 10, 2026. https://ojs.mbuslc.ac.th/index.php/issj/article/view/251.