Kamalia, A., & Mochammad Abdullah Salim. (2025). Implementation of Duolingo Application to Improve English Speaking Skills of Tribakti Islamic University Students: Classroom Action Study. Educalitra: English Education, Linguistics, and Literature Journal, 4(2), 144-152. Retrieved from https://journal.unupurwokerto.ac.id/index.php/educalitra/article/view/500