HALONEN, Deana. Problem Based Learning in Distance Education: A case study. The International Review of Research in Open and Distributed Learning, [S. l.], v. 9, n. 1, 2008. DOI: 10.19173/irrodl.v9i1.530. Disponível em: https://www.irrodl.org/index.php/irrodl/article/view/530. Acesso em: 24 apr. 2024.