PIECUCH, ŁUKASZ. Platformy e-learningowe. Journal of Education, Technology and Computer Science, [S. l.], v. 2, n. 2, p. 234–239, 2010. DOI: 2080-9069. Disponível em: https://journals.ur.edu.pl/jetacomps/article/view/7106. Acesso em: 24 sie. 2024.