GREGORY, S. .; BANNISTER-TYRRELL, M. Digital learner presence and online teaching tools: higher cognitive requirements of online learners for effective learning. Research and Practice in Technology Enhanced Learning, [S. l.], v. 12, 2017. Disponível em: https://rptel.apsce.net/index.php/RPTEL/article/view/2017-12018. Acesso em: 18 may. 2024.