ISWARA, R. W.; AMBAG, S. C. Comparing Learners’ Perceptions of Learning English via Duolingo and BBC Learning English Platforms. DUTIES: Education and Humanities International Journal, [S. l.], v. 1, n. 2, p. 83–101, 2025. DOI: 10.70152/duties.v1i2.240. Disponível em: https://journal.akademimerdeka.com/ojs/index.php/duties/article/view/240. Acesso em: 11 feb. 2026.