JORDAN, Katy. Massive open online course completion rates revisited: Assessment, length and attrition. The International Review of Research in Open and Distributed Learning, [S. l.], v. 16, n. 3, 2015. DOI: 10.19173/irrodl.v16i3.2112. Disponível em: https://www.irrodl.org/index.php/irrodl/article/view/2112. Acesso em: 15 apr. 2024.