==Works==*"The Emperor Romanus Lecapenus and His Reign " (1929)*"The First Bulgarian Empire" (1930)*"Byzantine Civilization" (1933)*"The Medieval Manichee: A Study of the Christian Dualist Heresy " (1947)*"A History of the Crusades: Volume 1, The First Crusade and the Foundation of the Kingdom of Jerusalem" (Cambridge University Press 1951)* "A History of the Crusades: Volume 2, The Kingdom of Jerusalem and the Frankish East" (Cambridge University Press 1952)*"A History of the Crusades: Volume 3, The Kingdom of Acre and the Later Crusades" (Cambridge University Press 1954)*"The Eastern Schism: A Study of the Papacy and the Eastern Churches during the XIth and XIIth Centuries " (1955)*"The Sicilian Vespers: A History of the Mediterranean World in the Later Thirteenth Century" (1958)*"The White Rajahs" (1960)*"The Fall of Constantinople 1453" (1965)*"The Great Church in Captivity" (1968)*"The Last Byzantine Renaissance" (1970)*"The Orthodox Churches and the Secular State" (1972)* Sir Steven Runciman.