Runciman, Steven (1951), The First Crusade and the Foundation of the Kingdom of Jerusalem, A History of the Crusades, vol. 1, Cambridge: Cambridge University Press
Primary sources
Albert of Aix (Albertus Aquensis), Liber Christianae Expeditionis pro Ereptione, Emundatione et Restituitione Sanctae Hierosolymitanae Ecclesiae, in R.H.C.Occ., vol. iv
William of Tyre, Historia Rerum in Partibus Transmarinis Gestarum, in R.H.C.Occ, vol. i, parts i and ii