HARUNASARI, S. Y.; HALIM, N. Digital Backchannel: Promoting Students’ Engagement in EFL Large Class. International Journal of Emerging Technologies in Learning (iJET), [S. l.], v. 14, n. 07, p. pp. 163–178, 2019. DOI: 10.3991/ijet.v14i07.9128. Disponível em: https://online-journals.org/index.php/i-jet/article/view/9128. Acesso em: 7 oct. 2022.