Attwater, Donald & Catherine Rachel John: . 3. utg.. New York: Penguin Books, 1993. ISBN 0-140-51312-4. British History Online Bishops of Worcester Fleming, Robin (2004): Kings & Lords in Conquest England (Opptrykket utg.). Cambridge: Cambridge University Press. ISBN 0-521-52694-9. Mason, Emma: Powicke, F. Maurice & E. B. Fryde: 2. utg. London:Royal Historical Society 1961 Walsh, Michael: London: Burns & Oates 2007 ISBN 08601-2438-X William of Malmesbury: Williams, Ann (2000): The English and the Norman Conquest. Ipswich: Boydell Press. ISBN 0-85115-708-4.