TARIHORAN, Sasmita; JUFRIZAL, Jufrizal. The Effective Level of Intensive English Program on English Speaking Proficiency in First Year University Students. Indonesian Journal of Foreign Language Studies, [S. l.], v. 3, n. 1, p. 29–39, 2026. DOI: 10.65576/indofes.v3i1.33. Disponível em: https://indofes.org/index.php/journal-indofes/article/view/33. Acesso em: 30 jun. 2026.