“THE EFFECTIVENESS OF DUOLINGO AS A SUPPLEMENTARY TOOL IN ARABIC VOCABULARY ACQUISITION AMONG EFL LEARNERS IN HIGHER EDUCATION: A QUALITATIVE CASE STUDY”. BARAYA : Journal of Arabic and World Languages Education, vol. 2, no. 1, Aug. 2026, pp. 42-55, https://ejournal.stairaya.ac.id/index.php/baraya/article/view/103.