ณิชชาชัยกุล อ. (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. Udon Thani,Thailand, 2(4), pp. 75–85. available at: https://he04.tci-thaijo.org/index.php/hpc8Journal/article/view/1927 (accessed: 19 April 2025).