GŁUSIUK, Anna. I due matrimoni di Cristina di Markyate. Saeculum Christianum. Pismo Historyczne, [S. l.], v. 21, n. 1, p. 51–60, 2021. Disponível em: https://czasopisma.uksw.edu.pl/index.php/sc/article/view/7941. Acesso em: 5 grudz. 2025.