SITKIEWICZ, Piotr. Schulz w Roju . Schulz/Forum, [S. l.], n. 17–18, p. 153–183, 2021. DOI: 10.26881/sf.2021.17-18.08. Disponível em: https://czasopisma.bg.ug.edu.pl/index.php/schulz/article/view/8135. Acesso em: 25 kwi. 2024.