KURNIAWATI, D. A.; AGUSTINA, E.; KUSPIYAH, H. R. The Effect of Duolingo Application Towards Students’ Vocabulary Mastery at the Seventh Grade Students of SMP Negeri 3 Belitang Mulya. Channing: Journal of English Language Education and Literature, [S. l.], v. 6, n. 2, p. 43–48, 2022. DOI: 10.30599/channing.v6i2.1569. Disponível em: https://journal.unuha.ac.id/index.php/Channing/article/view/1569. Acesso em: 21 jul. 2024.