CHEANEY, James D.; INGEBRITSEN, Thomas. Problem-based Learning in an Online Course: A case study. The International Review of Research in Open and Distributed Learning, [S. l.], v. 6, n. 3, 2006. DOI: 10.19173/irrodl.v6i3.267. Disponível em: https://www.irrodl.org/index.php/irrodl/article/view/267. Acesso em: 7 jul. 2024.