(en) Luigi G. De Anna, Pauliina De Anna et Eero Kuparinen, Tuitio Europae : Chivalric Orders on the Spiritual Paths of Europe : Proceedings of the Conference "The Spiritual Paths of Europe--Crusades, Pilgrimages, and Chivalric Orders", Turku 28.-29.11.1997, General History and Italian Language and Culture, University of Turku, Finland, , 208 p. (ISBN978-951-29-1300-8, lire en ligne)
