Herni Sri Wulandari, Halim A. Gamified Learning: Evaluating the Impact of Duolingo on Language Retention and Academic Performance in Secondary School Students. borju. borneo. educational. j. [Internet]. 2024 Aug. 30 [cited 2024 Nov. 21];6(2):160-79. Available from: https://jurnal.fkip-uwgm.ac.id/index.php/Borju/article/view/1724