ZHOU, Hanru; YU, Qinglan. The Study of Opening and Closing of Conversations in Oral English Textbooks. Journal of English Language Teaching and Applied Linguistics , [S. l.], v. 5, n. 2, p. 183–190, 2023. DOI: 10.32996/jeltal.2023.5.2.21. Disponível em: https://al-kindipublishers.org/index.php/jeltal/article/view/5361. Acesso em: 5 aug. 2025.