PHAN, T. Solutions for developing ecotourism in Na Hang district, Tuyen Quang province. SCIENTIFIC JOURNAL OF TAN TRAO UNIVERSITY, [S. l.], v. 10, n. 1, 2024. DOI: 10.51453/2354-1431/2024/1199. Disponível em: https://tckh.daihoctantrao.edu.vn/index.php/sjttu/article/view/1199. Acesso em: 7 nov. 2024.