„The Effect Of Duolingo Application Toward Students Listening Achievement Of Seventh Grade Students At SMP Negeri 1 Pasaributobing”. Jurnal Kajian Ilmu Pendidikan (JKIP) 4, no. 2 (mai 24, 2024): 582–588. Data accesării iulie 30, 2026. https://journal.al-matani.com/index.php/jkip/article/view/876.