Niazi, Sultan Mahmood, Perveen Akhter Farhat, and Ghulamullah. “Contrastive Analysis of the Vowel Sound System of Urdu and English Languages”. Pakistan Languages and Humanities Review 7, no. 4 (October 26, 2023): 228–240. Accessed November 24, 2024. https://ojs.plhr.org.pk/journal/article/view/675.