LE, Huong Hoa. POLITENESS STRATEGIES IN THE CONVERSATIONAL ACTIVITIES IN THE COURSE BOOK “CAMPAIGN 2”. VNU Journal of Foreign Studies, [S. l.], v. 39, n. 4, p. 1–15, 2022. DOI: 10.63023/2525-2445/jfs.ulis.5152. Disponível em: https://jfs.ulis.vnu.edu.vn/index.php/fs/article/view/5152. Acesso em: 4 dec. 2024.