Wibowo, Ary Iswanto, Wiruma Titian Adi, and Rizky Mirani Desi Pratama. “Mispronouncing English Vowel Sounds on Office Admisintrative’s Students Universitas Bina Sarana Informatika”. IJOTL-TL: Indonesian Journal of Language Teaching and Linguistics 6, no. 3 (September 13, 2021): 231-238. Accessed April 26, 2024. https://ijotl-tl.soloclcs.org/index.php/ijoltl/article/view/679.