Umar, Umar. “THE IMPORTANT ROLES OF TEACHERS IN ENGLISH LANGUAGE TEACHING (ELT)”. JELL (Journal of English Language and Literature) STIBA-IEC Jakarta 6, no. 01 (March 7, 2021): 69-80. Accessed April 16, 2026. https://journal.stibaiec-jakarta.ac.id/ojs/index.php/jell/article/view/117.