Childs, Wendy. Resistance and Treason in the Vita Edwardi Secundi // Prestwich, Michael; Britnell, R. H.; Frame, Robin (redaktorlar ). Thirteenth Century England VI: Proceedings of the Durham Conference 1995. The Boydell Press. 1997.
Cokayne, George Edward. The Complete Peerage, edited by H.A. Doubleday and Lord Howard de Walden. IX. London: St. Catherine Press. 1936. 596–9.
Oman, Charles. A History of the Art of War in the Middle Ages. 2 (3rd). Routledge. 1978.
Ormrod, W.M. Edward III. Yale University Press. 2011.
Prestwich, Michael. Edward I. Yale University Press. 1988.
Richardson, Douglas. Everingham, Kimball G. (redaktor). Plantagenet Ancestry: A Study in Colonial and Medieval Families. II (2nd). Salt Lake City. 2011. ISBN978-1449966348.
Richardson, Douglas. Everingham, Kimball G. (redaktor). Magna Carta Ancestry: A Study in Colonial and Medieval Families. IV (2nd). Salt Lake City. 2011. ISBN978-1460992708.
Mitchell, Linda E. Maud Marshal and Margaret Marshal: Two Viragos Extraordinaire // French, Katherine L.; Biggs, Douglas L. (redaktorlar ). The Ties that Bind: Essays in Medieval British History in Honor of Barbara Hanawalt. Routledge. 2010. 121–142.