Hartina, St., Syahrir, and Nurul Fajriani Syafar. 2026. “TEACHER-MEDIATED DUOLINGO USE AND VOCABULARY GAINS AMONG JUNIOR HIGH SCHOOL EFL LEARNERS IN INDONESIAN CONTEXT”. E-Journal of ELTS (English Language Teaching Society) 14 (03):315-27. https://doi.org/10.22487/elts.v14i03.6375.