NYKIEL, KRZYSZTOF. The indulgences: significate and actual influence on the life of the Church. Canon Law. Legal and Historical Quarterly, [S. l.], v. 59, n. 3, p. 57–72, 2016. DOI: 10.21697/pk.2015.59.3.04. Disponível em: https://czasopisma.uksw.edu.pl/index.php/pk/article/view/1223. Acesso em: 7 dec. 2025.