LUTTRELL, Anthony. Saint Ubaldesca di Calcinaia. Ordines Militares Colloquia Torunensia Historica. Yearbook for the Study of the Military Orders, [S. l.], v. 18, p. 287–291, 2013. DOI: 10.12775/OM.2013.014. Disponível em: https://apcz.umk.pl/OM/article/view/OM.2013.014. Acesso em: 8 jul. 2025.