Nguyen, H. T. T. ., Le, H. T. T. and Ha, L. K. T. . (2023) “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, 22(8), pp. 272–286. Available at: https://ijlter.myres.net/index.php/ijlter/article/view/1718 (Accessed: 19 April 2026).