Yuniar Yuniar, Syawal Syawal and Hijrah Hijrah (2026) “The Effectiveness of AI-Based Application Duolingo in Enhancing Students’ Vocabulary Mastery among Indonesian EFL Learners”, Sintaksis : Publikasi Para ahli Bahasa dan Sastra Inggris, 4(1), pp. 30–41. doi: 10.61132/sintaksis.v4i1.2463.