HIDAYAT, D. THE EFFECTIVENESS OF DUOLINGO IN IMPROVING VOCABULARY MASTERY AMONG FOURTH-GRADE STUDENTS. Al-Irsyad: Journal of Education Science, [S. l.], v. 4, n. 2, p. 641–647, 2025. DOI: 10.58917/aijes.v4i2.306. Disponível em: https://ejurnal.stkipddipinrang.ac.id/index.php/jse/article/view/306. Acesso em: 22 agu. 2025.