SHEA, Peter. Introduction to Section II. Online Learning, Boston, MA, v. 22, n. 4, 2019. DOI: 10.24059/olj.v22i4.1591. Disponível em: https://olj.onlinelearningconsortium.org/index.php/olj/article/view/1591. Acesso em: 25 mar. 2026.