The Effectiveness of the “Busuu Platform” in Improving the Writing Skills of 1st Grade Junior High School Students in Medan. Jurnal Onoma: Pendidikan, Bahasa, dan Sastra, [S. l.], v. 11, n. 3, p. 3452–3460, 2025. DOI: 10.30605/onoma.v11i3.6611. Disponível em: https://e-journal.my.id/onoma/article/view/6611. Acesso em: 1 may. 2026.