Umi Mujiarni, Sabarun, Hesti Widiastuty. Duolingo for Vocabulary Mastery: Empowering Students in the Digital Age of Language Learning. EJI [Internet]. 2024 Jul. 16 [cited 2024 Dec. 22];8(2):382-99. Available from: https://ejournal-fkip.unisi.ac.id/eji/article/view/2767