GRACZYK, W. The 15th century book in the present collection of the library of seminary in Płock. Saeculum Christianum, [S. l.], v. 22, p. 91–97, 2021. DOI: 10.21697/sc.2015.22.09en. Disponível em: https://czasopisma.uksw.edu.pl/index.php/sc/article/view/8571. Acesso em: 24 kwi. 2024.