Kristó, Gyula (editor): Korai Magyar Történeti Lexikon - 9-14. század ; Akadémiai Kiadó, 1994, Budapest; . Runciman, Steven: A History of the Crusades - Volume II (The Kingdom of Jerusalem and the Frankish East 1100-1187); Cambridge University Press, 1988, Cambridge; , s. 369-370. Baldwin, Marshall W., and Setton, Kenneth M, , The University of Wisconsin Press, Madison, 1969, s. 551.