Kamalia, Aghni, and 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), 144-52. https://journal.unupurwokerto.ac.id/index.php/educalitra/article/view/500.