Jabarkan Catatan dari Kerajaan Strathclyde

Alcock, Leslie, Kings and Warriors, Craftsmen and Priests in Northern Britain AD 550–850. Society of Antiquaries of Scotland, Edinburgh, 2003. ISBN 0-903903-24-5

Barrell, A.D.M., Medieval Scotland. Cambridge University Press, Cambridge, 2000. ISBN 0-521-58602-X

Duncan, A.A.M., The Kingship of the Scots 842–1292: Succession and Independence. Edinburgh University Press, Edinburgh, 2002. ISBN 0-7486-1626-8

Hanson, W.S., "Northern England and southern Scotland: Roman Occupation" in Michael Lynch (ed.), The Oxford Companion to Scottish History. Oxford UP, Oxford, 2001. ISBN 0-19-211696-7

Koch, John, "The Place of 'Y Gododdin' in the History of Scotland" in Ronald Black, William Gillies and Roibeard Ó Maolalaigh (eds) Celtic Connections. Proceedings of the 10th International Congress of Celtic Studies, Volume One. Tuckwell, East Linton, 1999. ISBN 1-898410-77-1