NA, Tran Thi Ly. Announcement Structure in School Communication. VNU Journal of Foreign Studies, [S. l.], v. 29, n. 1S, p. 70–79, 2023. Disponível em: https://jfs.ulis.vnu.edu.vn/index.php/fs/article/view/5113. Acesso em: 18 apr. 2025.