SHEA, Peter. Introduction to Volume 24, Issue 2 - June 2020. Online Learning, Boston, MA, v. 24, n. 2, 2020. DOI: 10.24059/olj.v24i2.2299. Disponível em: https://olj.onlinelearningconsortium.org/index.php/olj/article/view/2299. Acesso em: 25 mar. 2026.