SIELEZIN, Jan Ryszard. Specificity of sources for political science. Przegląd Politologiczny, [S. l.], n. 1, p. 5–17, 2023. DOI: 10.14746/pp.2022.28.1.1. Disponível em: https://pressto.amu.edu.pl/index.php/pp/article/view/37993. Acesso em: 17 aug. 2024.