Yuniar Yuniar, Syawal Syawal, & 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), 30–41. https://doi.org/10.61132/sintaksis.v4i1.2463