BAGGALEY, Jon; KANE, Tom; WADE, Bill. Online Polling Services. The International Review of Research in Open and Distributed Learning, [S. l.], v. 3, n. 2, 2002. DOI: 10.19173/irrodl.v3i2.89. Disponível em: https://www.irrodl.org/index.php/irrodl/article/view/89. Acesso em: 21 nov. 2024.