HUBAIS, A.; PILLAI, S. An instrumental analysis of English vowels produced by Omanis. Journal of Modern Languages, [S. l.], v. 20, n. 1, p. 1–18, 2017. Disponível em: https://ajap.um.edu.my/index.php/JML/article/view/3371. Acesso em: 3 apr. 2025.