Kakerissa, M., Marantika, J. and Karuna, K. (2022) “THE EFFECTIVENESS OF USING DUOLINGO INTERACTIVE MEDIA ON THE MASTERY OF GERMAN VOCABULARY”, J-EDu: Journal - Erfolgreicher Deutschunterricht, 2(1), pp. 107-112. doi: 10.30598/J-EDu.2.1.107-112.