PREISMAN, Kristi A. Teaching Presence in Online Education: From the Instructor’s Point-of-View. Online Learning, Boston, MA, v. 18, n. 3, 2014. DOI: 10.24059/olj.v18i3.446. Disponível em: https://olj.onlinelearningconsortium.org/index.php/olj/article/view/446. Acesso em: 3 apr. 2026.