Gw mau tau Lihat pula dari Wangsa Kapetia Anjou

Fine, John Van Antwerp (1994) [1987]. The Late Medieval Balkans: A Critical Survey from the Late Twelfth Century to the Ottoman Conquest. Ann Arbor, Michigan: University of Michigan Press. (ISBN 0472082604).

Geanakoplos, Deno John (1975). "Byzantium and the Crusades, 1261–1354". In Setton, Kenneth M.; Hazard, Harry W. (eds.). A History of the Crusades, Volume III: The Fourteenth and Fifteenth Centuries. Madison and London: University of Wisconsin Press. pp. 27–68. (ISBN 0299066703).