SULAIMAN; MUHAMMAD IQBAL RIPO PUTRA. An Analysis of Factors Influencing Student’s Problem in Pronouncing Long and Short Vowels. SELL (Scope of English Language Teaching, Linguistics, and Literature) Journal, [S. l.], v. 2, n. 2, p. 90–104, 2017. DOI: 10.31597/sl.v2i2.516. Disponível em: http://publikasi.stkippgri-bkl.ac.id/index.php/SL/article/view/516. Acesso em: 4 may. 2025.