SZYMBORSKI, W. Medieval Rome in Poland – Indulgences of the Churches of the City [of Rome] and Jubilee Indulgences in Medieval Poland. Biuletyn Polskiej Misji Historycznej, [S. l.], v. 10, p. 397–424, 2015. DOI: 10.12775/BPMH.2015.015. Disponível em: https://apcz.umk.pl/BPMH/article/view/BPMH.2015.015. Acesso em: 3 luty. 2023.