Barlow, Frank (1979). The English Church 1000–1066: A History of the Later Anglo-Saxon Church (Second ed.). New York: Longman.
ISBN0-582-49049-9.
Fryde, E. B.; Greenway, D. E.; Porter, S.; Roy, I. (1996). Handbook of British Chronology (Third revised ed.). Cambridge, UK: Cambridge University Press.
ISBN0-521-56350-X.