NGUYEN, H. T. T. .; LE, H. T. T.; HA, L. K. T. . Preserving the Mother Tongue of Ethnic Minority Students through Experiential Activities in Primary Schools: An Exploratory Study in the Northern Mountainous Region of Vietnam. International Journal of Learning, Teaching and Educational Research, [S. l.], v. 22, n. 8, p. 272–286, 2023. Disponível em: https://ijlter.myres.net/index.php/ijlter/article/view/1718. Acesso em: 19 apr. 2026.