Wulandari F, Rustipa K. ENGLISH DIPTHONGS [eɪ], [aɪ], [aʊ] PRONUNCIATION PROBLEMS ENCOUNTERED BY SEVENTH SEMESTER STUDENTS OF ENGLISH LITERATURE STUDY PROGRAM IN STIKUBANK UNIVERSITY ACADEMIC YEAR OF 2018. bb [Internet]. 30Sep.2022 [cited 23Jul.2024];17(2):38-1. Available from: https://www.unisbank.ac.id/ojs/index.php/fbib1/article/view/9070