AZURA FAZIRA; DINDA GUSTIANA; YANI LUBIS. English vowels. Jurnal Pendidikan dan Sastra Inggris, [S. l.], v. 3, n. 2, p. 111–118, 2023. DOI: 10.55606/jupensi.v3i2.2007. Disponível em: https://journalshub.org/index.php/JUPENSI/article/view/2007. Acesso em: 7 jun. 2025.