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Annisa Sevia Putri, Melinda Nata Sari, Rizka Dwi Fani, Sylfana Ryan Mulia and Supriadi 2023. Analysis of Vowel Pronunciation Errors of Grade IX Students of MTs Harapan Jasa Langkat. Journal of Applied Linguistics . 2, 2 (Jan. 2023), 36–40. DOI:https://doi.org/10.52622/joal.v3i1.125.