SHEA, Peter. Introduction to Online Learning Volume 22 Issue 1. Online Learning, Boston, MA, v. 22, n. 1, 2018. DOI: 10.24059/olj.v22i1.1412. Disponível em: https://olj.onlinelearningconsortium.org/index.php/olj/article/view/1412. Acesso em: 25 mar. 2026.