Somrut , Somrut. “Waste management of local government organizations Health Regional 9”. Journal of Health Promotion and Environmental Health Research Health Promotion Centre 8 Udon Thani 1, no. 4 (June 24, 2024): 87–99. accessed April 4, 2025. https://he04.tci-thaijo.org/index.php/hpc8Journal/article/view/1362.