BEAUDIN, Bart P. Keeping Online Asynchronous Discussions on Topic. Online Learning, Boston, MA, v. 3, n. 2, 2019. DOI: 10.24059/olj.v3i2.1916. Disponível em: https://olj.onlinelearningconsortium.org/index.php/olj/article/view/1916. Acesso em: 25 mar. 2026.