Zainudin Zainudin, Ninik Mulyani and Tri Andayani (2025) “The Effectiveness of Duolingo Application on Vocabulary Mastery in English Language Learning of Grade 10 Students at SMK Al-Kautsar Sriwijaya”, International Journal of Education and Literature, 4(2), pp. 150–154. doi: 10.55606/ijel.v4i2.249.