Hasibuan SA. A Qualitative Approach to the Use of Digital Modules in Teaching Argumentative Essay Writing to University Students. ELTM [Internet]. 2025 Dec. 30 [cited 2026 Mar. 16];5(3):228-36. Available from: https://jurnal.fkip.unismuh.ac.id/index.php/eltm/article/view/1927