^ abcdefSchwennicke, Detlev, ed (1984). “Tafel 116”. Europäische Stammtafeln: Stammtafeln zur Geschichte der Europäischen Staaten, Neue Folge. III. Marburg: J. A. Stargardt
^Keats-Rohan, K. S. B. (1997). Family Trees and the Root of Politics; A Prosopography of Britain and France from the Tenth to the Twelfth Century. Woodbridge: Boydell Press. p. 255
^The Annals of Flodoard of Reims, 919–966. Toronto: University of Toronto Press. (2011). p. 30
参考文献
Seward, Desmond (2014). The Demon's Brood: A history of the Plantagent Dynasty. Pegasus Books. ISBN978-1101606285
Jones, Dan (2012). The Plantagenets: The Warrior Kings and Queens Who Made England. London: HarperPress. ISBN978-0-00-721392-4