ณิชชาชัยกุล อุบล. 2024. “Effectiveness of Environmental Health Development in Prisons under the Royal Prison Project: Sharing Happiness, Doing Good for the Nation, Religion, and King in Sakon Nakhon Province, Fiscal Year 2024”. Journal of Health Promotion and Environmental Health Research Health Promotion Centre 8 Udon Thani 2 (4). Udon Thani,Thailand:75-85. https://he04.tci-thaijo.org/index.php/hpc8Journal/article/view/1927.