SRIWONGWANNA, J. . Guideline for Development to raise the Standards of Sustainable Nature-based Tourism in Ubon Ratchathani. Journal of Research and Development Institute Rajabhat Maha Sarakham University, [S. l.], v. 7, n. 2, p. 455–472, 2020. Disponível em: https://so03.tci-thaijo.org/index.php/rdirmu/article/view/226921. Acesso em: 7 may. 2024.