Kurniawati, D.A., Agustina, E. and Kuspiyah, H.R. 2022. 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. 6, 2 (Jun. 2022), 43–48. DOI:https://doi.org/10.30599/channing.v6i2.1569.