HOSTETTER, C.; BUSCH, M. Community matters: Social presence and learning outcomes. Journal of the Scholarship of Teaching and Learning, [S. l.], v. 13, n. 1, p. 77–86, 2013. Disponível em: https://scholarworks.iu.edu/journals/index.php/josotl/article/view/3268. Acesso em: 3 dec. 2023.