LEAFMAN, J. S.; MATHIESON, K. Online Instructor Perceptions of Social Presence and Educational use of Social Media. Advances in Social Sciences Research Journal, [S. l.], v. 2, n. 11, 2015. DOI: 10.14738/assrj.211.1637. Disponível em: http://804474.wannyin.cyou/index.php/ASSRJ/article/view/1637. Acesso em: 1 dec. 2024.