Mohammed Elhadi Elnor Mohammed, Dr. Muntasir. 2025. "A Comparative Phonological Study of Vowel Variation Between British and American English: Evidence from 200 Words". مجلة البطانة للعلوم التربوية, عدد 19 (ديسمبر):145-60. https://ojs.albutana.edu.sd/index.php/jes/article/view/252.