AJISOKO, Pangkuh. The Use of Duolingo Apps to Improve English Vocabulary Learning. International Journal of Emerging Technologies in Learning (iJET), [S. l.], v. 15, n. 07, p. pp. 149–155, 2020. DOI: 10.3991/ijet.v15i07.13229. Disponível em: https://online-journals.org/index.php/i-jet/article/view/13229. Acesso em: 22 nov. 2024.