Rullu SM, Nggolaon D, Budahu N. Error Analysis of English Vowels Pronunciation Made by The Students of English Education Study Program. Qalam [Internet]. 2023 Jul. 3 [cited 2024 Dec. 4];12(1):81-93. Available from: https://ejournal.um-sorong.ac.id/index.php/jq/article/view/2542