Kutipan

Sumber primer

• Thorpe, B, ed. (1861). The Anglo-Saxon Chronicle. Rerum Britannicarum Medii Ævi Scriptores. Vol. Vol. 1. London: Longman, Green, Longman, and Roberts. Accessed via Internet Archive.
• Williams Ab Ithel, J, ed. (1860). Annales Cambriae. Rerum Britannicarum Medii Ævi Scriptores. London: Longman, Green, Longman, and Roberts. Accessed via Internet Archive.
• "Annals of the Four Masters". Corpus of Electronic Texts (Edisi 16 December 2013). University College Cork. 2013. Diakses tanggal 23 November 2014.
• "The Annals of Ulster". Corpus of Electronic Texts (Edisi 15 August 2012). University College Cork. 2012. Diakses tanggal 23 November 2014.
• Dumville, D. N. (2005). Brenhinoedd y Saeson, 'The Kings of the English', A.D. 682–954: Texts P, R, S in Parallel. University of Aberdeen.
• Williams Ab Ithel, J, ed. (1860). Brut y Tywysigion; or, The Chronicle of the Princes. Rerum Britannicarum Medii Ævi Scriptores. London: Longman, Green, Longman, and Roberts. Accessed via Internet Archive.
• "Chronicon Scotorum". Corpus of Electronic Texts (Edisi 24 March 2010). University College Cork. 2010. Diakses tanggal 26 November 2014.
• "Fragmentary Annals of Ireland". Corpus of Electronic Texts (Edisi 5 September 2008). University College Cork. 2008. Diakses tanggal 29 November 2014.

Secondary sources

• Ashley, Mike (7 June 2012). The Mammoth Book of British Kings and Queens. Little, Brown Book Group. ISBN 978-1-4721-0113-6.
• Downham, Clare (2007). Viking Kings of Britain and Ireland: The Dynasty of Ívarr to A.D. 1014. Edinburgh: Dunedin Academic Press. ISBN 978-1-903765-89-0.
• Forte, Angelo; Oram, Richard D.; Pedersen, Frederik (5 May 2005). Viking Empires. Cambridge University Press. ISBN 978-0-521-82992-2.
• Hart, Cyril (2004). "Ragnall (d. 920/21)". Oxford Dictionary of National Biography. Oxford University Press. doi:10.1093/ref:odnb/49264. Diakses tanggal 20 May 2015. Subscription or UK public library membership Diarsipkan 2013-04-29 di Wayback Machine. required.
• Holman, Katherine (2007). The Northern Conquest: Vikings in Britain and Ireland. Signal Books. ISBN 978-1-904955-34-4.
• Medieval Dublin. Vol. 6. Four Courts Press. 2005.
• Radner, Joan. "Writing history: Early Irish historiography and the significance of form" (PDF). Celtica. 23: 312–325. Diarsipkan dari asli (PDF) tanggal 23 September 2015.
• Sawyer, Peter (January 2001). The Oxford Illustrated History of the Vikings. Oxford University Press. ISBN 978-0-19-285434-6.
• Woolf, Alex (2007). From Pictland to Alba: 789 – 1070. Edinburgh University Press. ISBN 978-0-7486-1234-5.