Tamsorm, P., Jongyung, T., Prasitnok, S. and Rakpinit, K. 2021. Centre of Sufficiency Economy for Sustainable Development in Nongbua Sa- ard Subdistrict Municipality, Buayai District, Nakhon Ratchasima Province. Journal of Research and Development Institute Rajabhat Maha Sarakham University. 8, 1 (Apr. 2021), 445–462.