NICKEL, Tom. Online Learning Activities: Beginning An International Collaboration. The International Review of Research in Open and Distributed Learning, [S. l.], v. 3, n. 1, 2002. DOI: 10.19173/irrodl.v3i1.73. Disponível em: https://www.irrodl.org/index.php/irrodl/article/view/73. Acesso em: 26 apr. 2024.