Hutapea, N. R. P. ., N. Lubis, S. Manik, and L. W. Manurung. “Error Analysis of Students’ Pronunciation in Pronouncing English Vowels And Consonants”. Jurnal Pendidikan Dan Konseling (JPDK), vol. 5, no. 4, Aug. 2023, pp. 703-12, doi:10.31004/jpdk.v5i4.18042.