Nguồn Godfrey xứ Bouillon

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Andressohn, John Carl (1947). The Ancestry and Life of Godfrey of Bouillon. Indiana University publications. Social science series, no.5. Indiana University Publications, Social Science Series 5.
Murray, Alan V., "The Army of Godfrey of Bouillon, 1096–1099: Structure and Dynamics of a Contingent on the First Crusade" (PDF), Revue belge de philologie et d'histoire 70 (2), 1992
John, Simon (2017). Godfrey of Bouillon: Duke of Lower Lotharingia, Ruler of Latin Jerusalem, c. 1060–1100. Taylor & Francis. ISBN 978-1-317-12630-0.
Barker, Ernest (1911). "Godfrey of Bouillon". In Chisholm, Hugh (ed.). Encyclopædia Britannica. 12. (11th ed.). Cambridge University Press. pp. 172–173.
Bréhier, Louis René (1909). "Godfrey of Bouillon". In Catholic Encyclopedia. 6. New York: Robert Appleton Company.
Eidelberg, Schlomo (1996). The Jews and the Crusaders: The Hebrew Chronicles of the First and Second Crusades. KTAV Publishing House, Inc. ISBN 978-0-88125-541-6.
France, John (1983). “The Election and Title of Godfrey de Bouillon”. Canadian Journal of History. 18 (3): 321–329. doi:10.3138/cjh.18.3.321.
“Godfrey of Bouillon”. Internet Medieval Sourcebook: The Crusaders at Constantinople: Collected Accounts. Truy cập ngày 18 tháng 5 năm 2014.
Golb, Norman (1998). The Jews in Medieval Normandy: A Social and Intellectual History. Cambridge University Press. ISBN 978-0-521-58032-8.
Holböck, Ferdinand (2002). Married Saints and Blesseds: Through the Centuries. Miller, Michael J biên dịch. Ignatius Press. ISBN 0-89870-843-5. Truy cập ngày 4 tháng 5 năm 2020.
Ibn al-Qalanisi (1932). The Damascus chronicle of the Crusades. University of London historical series,no. 5. Gibbs, H.V biên dịch. Luzac.
John, Simon (2022). “The Long shadow of the First Crusade”. History Today. 72 (5): 72–83.
Murray, Alan (1990). “The Title of Godfrey of Bouillon as Ruler of Jerusalem”. Collegium Medievale. 3: 163–178.
Murray, Alan (2000). The Crusader Kingdom of Jerusalem: A Dynastic History 1099–1125. Unit for Prosopographical Research, Linacre College. ISBN 978-1900934039.
Porter, Whitworth (2013). A History of the Knights of Malta. Cambridge University Press. ISBN 978-1108066228.
Riley-Smith, Jonathan (1979). “The Title of Godfrey of Bouillon”. Bulletin of the Institute of Historical Research. 52 (125): 83–86. doi:10.1111/j.1468-2281.1979.tb02085.x.
Rubenstein, Jay (2008). Gabriele, Matthew; Stuckey, Jace (biên tập). How Carolingian Kingship Trumped Millenniarism at the End of the First Crusade in 'The legend of Charlemagne in the Middle Ages: power, faith, and crusade'. Palgrave Macmillan. ISBN 978-0-230-61544-1.

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WikiPedia: Godfrey xứ Bouillon http://www.fordham.edu/halsall/basis/AnnaComnena-A... http://www.fordham.edu/halsall/source/cde-atcp.asp //doi.org/10.1111%2Fj.1468-2281.1979.tb02085.x //doi.org/10.3138%2Fcjh.18.3.321 https://books.google.com/books?id=1HEuDwAAQBAJ&q=%... https://books.google.com/books?id=JhBADwAAQBAJ&pg=... https://books.google.com/books?id=qkV71_6H8UIC https://books.google.com/books?id=rK8nA9U0OE4C&q=t... https://www.persee.fr/doc/rbph_0035-0818_1992_num_... https://archive.org/details/firstcrusaders1000jona