Dani, Ersika Puspita. “Investigating The Fifth Semester Students’ Ability Of Stmik Pelita Nusantara In Toefl”. Jurnal Sains dan Teknologi 1, no. 1 (September 20, 2019): 26–31. Accessed May 7, 2026. https://ejournal.sisfokomtek.org/index.php/saintek/article/view/25.