Higham, N.J. , (1993) The Kingdom of Northumbria AD 350–1100ISBN0-86299-730-5
Rollason, D. , (2003) Northumbria, 500–1100: Creation and Destruction of a KingdomISBN0-521-81335-2
Woodman, D. A. (March 2015). "Charters, Northumbria and the Unification of England in the Tenth and Eleventh Centuries". Northern History. LII (1). OCLC60626360.
Adams, M. , (2013) The King in the North the life and times of Oswald of NorthumbriaISBN978-1-78185-420-4