Diyan Andriani, Rizal Fadli, Awatif Awatif, Sukur Sukur, and Ifrianto Ifrianto. “Error in Pronouncing English Diphthongs at The First Grade of Merangin University Students”. Simpati 4, no. 4 (October 26, 2026): 221–232. Accessed October 30, 2026. https://jurnal.alimspublishing.co.id/index.php/simpati/article/view/2692.