KRASZEWSKI, K. Werken w zuryskim systemie szkolnym. Journal of Education, Technology and Computer Science, [S. l.], n. 1, p. 43–48, 2010. DOI: 2080-9069. Disponível em: https://journals.ur.edu.pl/jetacomps/article/view/7115. Acesso em: 22 lip. 2024.