BENTZ, David T.; LAZAREVIC, Bojan. ONLINE LEARNING CHALLENGES: NEED FOR EVOLVING MODELS. European Scientific Journal, ESJ, [S. l.], v. 11, n. 3, 2015. Disponível em: https://test.eujournal.org/index.php/esj/article/view/5048. Acesso em: 19 apr. 2025.