RESEARCH ACTIVITIES AT HANOI UNIVERSITY. Journal of Foreign Language Studies, [S. l.], n. 19, p. 89–91, 2024. DOI: 10.56844/tckhnn.19.424. Disponível em: http://journals.hanu.edu.vn/index.php/tckhnn/article/view/424. Acesso em: 15 jan. 2026.