GRABOWSKI, F.; PASZKIEWICZ, A.; BOLANOWSKI, M. Wykorzystanie teorii małych światów w e-learningu. Journal of Education, Technology and Computer Science, [S. l.], v. 10, n. 2, p. 245–251, 2014. Disponível em: https://journals.ur.edu.pl/jetacomps/article/view/6601. Acesso em: 21 lis. 2024.