==Notes====References==* Anselm of Canterbury, by Giles Edward Murray Gasper (exerts from the book)* The Norman Kingdom of Sicily, by Donald Matthew (exerts from the book)* Council of Bari at the Encyclopædia Britannica* Catholic Encyclopedia* Claude Fleury, "Histoire Ecclesiastique"
* Anselm of Canterbury, by Giles Edward Murray Gasper (exerts from the book)* The Norman Kingdom of Sicily, by Donald Matthew (exerts from the book)* Council of Bari at the Encyclopedia Britannica* Catholic Encyclopedia* Claude Fleury, «Histoire Ecclesiastique»