↑Gitlitz, David Martin and Linda Kay Davidson, The Pilgrimage Road to Santiago, (St.Martin's Press, 2000), 60.
↑Setton, Kenneth Meyer, A History of the Crusades, (University of Wisconsin Press, 1975), 423.
↑Nafziger, George F. and Mark W. Walton, Islam at War: a history, (Greenwood Publishing Company, 2003), 86.
↑According to the king of Castile, "On their side 100,000 armed men fell in battle..." See Lynn Hunt, R. Po-chia Hsia, Thomas R. Martin, Barbara H. Rosenwein, and Bonnie Smith, The Making of the West: Peoples and Cultures: A Concise History: Volume I: To 1740, Second Edition (New York: Bedford/St. Martin's 2007), 391.