Wirojano, P. W., P. prayutsaradham, N. Juejan, S. Chukong, and A. Meeraka. “ Udon Thani province”. Journal for Developing the Social and Community, vol. 11, no. 1, Apr. 2024, pp. 865-80, https://so03.tci-thaijo.org/index.php/rdirmu/article/view/277341.