CHAU, Tang Minh. Highland Hill tribe language - an extinct language system needed to be saved. HO CHI MINH CITY OPEN UNIVERSITY JOURNAL OF SCIENCE - SOCIAL SCIENCES, [S. l.], v. 8, n. 1, p. 3–7, 2018. DOI: 10.46223/HCMCOUJS.soci.en.8.1.275.2018. Disponível em: https://journalofscience.ou.edu.vn/index.php/soci-en/article/view/275. Acesso em: 14 jul. 2026.