CHOO WEE LING; NG LEE LUAN. The Roles of Teaching Presence in Asynchronous and Synchronous Online Teaching Contexts. The English Teacher, [S. l.], v. 53, n. 1, 2024. Disponível em: https://meltajournals.com/index.php/TET/article/view/25. Acesso em: 22 feb. 2026.