CAO THANH, Nguyen. The Differences between Spoken and Written Grammar in English, in Comparison with Vietnamese. GIST – Education and Learning Research Journal, [S. l.], n. 11, p. 138–153, 2015. DOI: 10.26817/16925777.291. Disponível em: https://latinjournal.org/index.php/gist/article/view/391. Acesso em: 28 mar. 2024.