Prateep, Chira, and Thitirat Nakchat. “Immigration Administration in Nong Khai Province in Thailand 4.0 Era”. Journal of Rattana Bundit University 14, no. 2 (December 30, 2019): 35–45. Accessed May 9, 2024. https://so03.tci-thaijo.org/index.php/rbac/article/view/244453.