CHYROWICZ, B. Problems with justifying norms. Diametros, [S. l.], n. 7, p. 124–128, 2006. DOI: 10.13153/diam.7.2006.203. Disponível em: https://diametros.uj.edu.pl/diametros/article/view/203. Acesso em: 28 sep. 2022.