↑ Editors Gunnar Ander & Karl-Erik Löfqvist, "Allmänna Historien i berättelser 1"; Eng:"Common History in Tales 1", Published by Norstedts, 1960, no ISBN, page 239-240
↑ David Bates Normandy Before 1066 (Longman 1982), pp. 8–10.
↑ "Rollo | duke of Normandy". Encyclopedia Britannica. Retrieved 2017-11-10.
↑ Francois Neveux and Howard Curtis, A Brief History of the Normans: The Conquests that Changed the Face of Europe, Robinson 2008.
1 2 David Crouch, The Normans; The History of a Dynasty (London; New York: Hambledon Continuum, 2007), p. 4
↑ David Crouch, The Normans; The History of a Dynasty(London; New York: Hambledon Continuum, 2007), p. 7
↑ The Normans in Europe, trans. Elisabeth van Houts (Manchester; New York: Manchester University Press, 2000), p. 16
↑ The Annals of Flodoard of Reims 919–966, ed. & trans. Steven Fanning; Bernard S. Bachrach (Toronto: University of Toronto Press, 2011), p. xxi
1 2 The Normans in Europe, ed. & trans. Elisabeth van Houts (Manchester; New York: Manchester University Press, 2000), p. 2
1 2 3 Detlev Schwennicke, Europaische Stammtafeln: Stammtafeln zur Geschichte der Europaischen Staaten, Neue Folge, Band II (Marburg, Germany: J. A. Stargardt, 1984), Tafel 79
1 2 Detlev Schwennicke, Europaische Stammtafeln: Stammtafeln zur Geschichte der Europaischen Staaten, Neue Folge, Band II (Marburg, Germany: J. A. Stargardt, 1984), Tafel 1
