Michael Lapidge, John Blair, Simon Keynes: The Blackwell encyclopaedia of Anglo-Saxon England. Wiley-Blackwell, 2001. ISBN 9780631224921. Google Books (viitattu 11.6.2011). (englanniksi)
oxforddnb.com
JaenberhtOxford Dictionary of National Biography. Oxford University Press. Viitattu 11.6.2011. (englanniksi)