NGUYỄN VĂN, K. The situation of societal multilingualism and using language in area of ethnic minorities in Tuyen Quang province . SCIENTIFIC JOURNAL OF TAN TRAO UNIVERSITY, [S. l.], v. 6, n. 16, p. 12–23, 2021. DOI: 10.51453/2354-1431/2020/312. Disponível em: https://tckh.daihoctantrao.edu.vn/index.php/sjttu/article/view/312. Acesso em: 6 may. 2024.