LIU, Y. Investigating Learner Engagement in Flipped English as a Foreign Language Classroom. Journal of International Education and Practice, [S. l.], v. 3, n. 1 and 2, p. 11–17, 2020. DOI: 10.30564/jiep.v3i1and2.2276. Disponível em: https://journals.bilpubgroup.com/index.php/jiep/article/view/2276. Acesso em: 9 jul. 2025.