Tamsorm, P., T. Jongyung, S. Prasitnok, and K. Rakpinit. “ Nakhon Ratchasima Province”. Journal of Research and Development Institute Rajabhat Maha Sarakham University, vol. 8, no. 1, Apr. 2021, pp. 445-62, https://so03.tci-thaijo.org/index.php/rdirmu/article/view/248097.