MACIEJEWSKI, Jacek. Notes on the titles of Włocławek bishops until the beginning of the 14th century. Our Past, [S. l.], v. 79, p. 89–99, 1993. DOI: 10.52204/np.1993.79.89-99. Disponível em: https://ojs.academicon.pl/np/article/view/7206. Acesso em: 20 may. 2024.