PICCIANO, Anthony G. Planning for Online Education: A Systems Model. Online Learning, Boston, MA, v. 19, n. 5, 2015. DOI: 10.24059/olj.v19i5.548. Disponível em: https://olj.onlinelearningconsortium.org/index.php/olj/article/view/548. Acesso em: 25 mar. 2026.