LIBOWSKI, Łukasz. Domnus Petrus Cluniensis Abbas, Sermo de sancto Marcello papa et martyre. Vox Patrum, [S. l.], v. 82, p. 295–330, 2022. DOI: 10.31743/vp.12855. Disponível em: https://czasopisma.kul.pl/index.php/vp/article/view/12855. Acesso em: 7 aug. 2022.