English as a Solely Instructional Medium: Its Effectiveness on Students’ Responses and English Proficiency. JR-ELT (Journal of Research in English Language Teaching), [S. l.], v. 1, n. 1, p. 14–22, 2018. DOI: 10.30631/jr-elt.v1i1.4. Disponível em: https://jrelt.ftk.uinjambi.ac.id/jrelt/article/view/4. Acesso em: 9 aug. 2026.