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Perang Fatimiyah-Salibis (1099–1169)
Pengepungan Askelon terjadi pada tahun 1153. Pengepungan tersebut mengakibatkan penaklukan benteng Mesir oleh Pasukan Salib Kerajaan Yerusalem .
The Damascus Chronicle of the Crusaders, extracted and translated from the Chronicle of Ibn al-Qalanisi . Edited and translated by H. A. R. Gibb. London, 1932.
William of Tyre . A History of Deeds Done Beyond the Sea . Edited and translated by E. A. Babcock and A. C. Krey. Columbia University Press , 1943.
Daftary, Farhad (1992). The Isma'ilis: Their History and Doctrines . Cambridge University Press . ISBN 978-0-521-42974-0 .
Lev, Yaacov (1991). State and Society in Fatimid Egypt . Leiden: Brill. ISBN 9789004093447 .
Steven Runciman , A History of the Crusades, vol. II: The Kingdom of Jerusalem and the Frankish East, 1100-1187 . Cambridge University Press , 1952.
Malcolm Barber , The New Knighthood (Great Britain; Cambridge University Press, 1994), p. 74-75
Smail, R. C. Crusading Warfare 1097-1193. New York: Barnes & Noble Books, (1956) 1995. ISBN 1-56619-769-4