Chapter II. The First Crusade
[b] E. Gibbon, Decline and Fall of the Roman Empire.
[c] Fr. Wilken, Geschichte der Kreuzzüge.
[d] J. F. Michaud, Bibliothèque des Croisades (including many Arab accounts).
[e] Victor Duruy, Histoire du Moyen Age.
Chapter III. The Second Crusade
[b] E. Gibbon, op. cit.
[c] Charles Mills, History of the Crusades.
[d] L. von Ranke, Weltgeschichte.
[e] “Imad ad-Din” and others in Michaud’s Bibliothèque des Croisades.