Sudthijek, S. (2019) “The Strategy Development Administration Ecotourism Strategic Plan of National Hinnamno in Context of Word Natural Heritage”, Journal of Research and Development Institute Rajabhat Maha Sarakham University, 6(1), pp. 239–252. Available at: https://so03.tci-thaijo.org/index.php/rdirmu/article/view/211456 (Accessed: 3 May 2024).