Bibliografia Normanno-Sveva
Drell Joanna
Norman Italy and the Crusades: Thoughts on the 'Homefront'
storia
2015
Woodbridge
The Boydell Press
Crociate, Terrasanta, Economia, Mezzogiorno
in "Crusading and Pilgrimage in the Norman World", edd. K. Hurlock - P. Oldfield, pp. 51-63