Irwit Santi, Lisa, Achmad Hilal, and Rismiyanto -. “A Review of Duolingo Application in Learning English”. Channing: Journal of English Language Education and Literature 8, no. 2 (October 2, 2023): 56–63. Accessed June 25, 2024. https://journal.unuha.ac.id/index.php/Channing/article/view/2079.