Kreutz 1996. Charanis, Peter. "On the Question ofthe Hellenization ofSicily and Southern Italy During the Middle Ages." The American Historical Review. Vol
Treadgold, Warren. A Historyofthe Byzantine State and Society. Stanford University Press, 1997. Apologetics inthe Roman Empire: Pagans, Jews, and Christians
Matthew, The Norman Kingdom ofSicily, ISBN 0-521-26911-3 John Julius Norwich, The Kingdom inthe Sun, reprinted as part of his The Normans inSicily, ISBN 0-14-015212-1