IWANEK, Jan. Studia Politicae Universitatis Silesiensis Tom 1. Studia Politicae Universitatis Silesiensis, [S. l.], v. 1, 2017. Disponível em: https://journals.us.edu.pl/index.php/SPUS/article/view/5397. Acesso em: 8 kwi. 2025.