wahyu, M. W. A., Suhaida Zain Panjaitan, and Yani Lubis. “THE ROLE OF VOWEL SOUND IN ENGLISH PRONOUNCIATION: THE ROLE OF VOWEL SOUND IN ENGLISH PRONOUNCIATION”. Cemara Education and Science, vol. 2, no. 1, Feb. 2024, doi:10.62145/ces.v2i1.61.