ORDON, U.; SOŁTYSIAK, W. E-learning akademicki moda czy konieczność. Journal of Education, Technology and Computer Science, [S. l.], n. 2, p. 229–235, 2013. DOI: 2080-9069. Disponível em: https://journals.ur.edu.pl/jetacomps/article/view/6766. Acesso em: 22 lip. 2024.