LE, Thanh Nhan. Lịch sự trong giao tiếp ngôn ngữ. VNU Journal of Foreign Studies, [S. l.], v. 20, n. 4, 2004. Disponível em: https://jfs.ulis.vnu.edu.vn/index.php/fs/article/view/4110. Acesso em: 23 nov. 2024.