Mohammed Elhadi Elnor Mohammed DM. A Comparative Phonological Study of Vowel Variation between British and American English: Evidence from 200 Words. العلوم التربوية [انترنت]. 31 ديسمبر، 2025 [وثق 26 يناير، 2026];(19):145-60. موجود في: https://ojs.albutana.edu.sd/index.php/jes/article/view/252