LI, Cui. Intelligent System for College English Listening and Writing Training. International Journal of Emerging Technologies in Learning (iJET), [S. l.], v. 13, n. 10, p. pp. 121–133, 2018. DOI: 10.3991/ijet.v13i10.9457. Disponível em: https://online-journals.org/index.php/i-jet/article/view/9457. Acesso em: 2 may. 2024.