چهار بهترین مسائل درباره طرز تهیه شکلات صبحانه خانگی
↑ Riley-Smith (1979), "The Title of Godfrey of Bouillon", Bulletin of the Institute of Historical Research 52, pp. ↑ Murray, Alan V. (1990), "The Title of Godfrey of Bouillon as Ruler of Jerusalem", Collegium Medievale 3, pp. ↑ Riley-Smith، The Crusades: A History (2nd ed.)، ۳۵. ↑ Riley-Smith، The First Crusade and the Idea of Crusadi