NABZIFA, N.; FEDIYANTO, N. Duolingo-Based Vocabulary Gains in Junior High EFL Learners. Academia Open, [S. l.], v. 11, n. 1, p. 10.21070/acopen.11.2026.11851, 2026. DOI: 10.21070/acopen.11.2026.11851. Disponível em: https://ojs.umsida.ac.id/index.php/acopen/article/view/11851. Acesso em: 13 feb. 2026.