SHAHIR BADAWI, Wisam. Diphthongization of English Vowels. Journal of Tikrit university for humanities - مجلة جامعة تكريت للعلوم الانسانية, [S.l.], v. 26, n. 1, p. 18-1, mar. 2019. ISSN 1817-6798. Available at: <https://jtuh.tu.edu.iq/index.php/hum/article/view/22>. Date accessed: 18 may 2024.