Bradbury, Jim. (2009) Stephen and Matilda: the Civil War of 1139–53. Stroud, UK: The History Press. . Brown, R. Allen. (1962) English Castles. London: Batsford. . Carpenter, David. (1990) The Minority of Henry III. Berkeley, US: University of California Press. . Godber, Joyce. (1969) History of Bedfordshire, 1066–1888. Bedford: Bedfordshire County Council. Harsthorne, Charles Henry. (1861) Bedford Castle. Holdenby: Private Distribution. . King, Edmund. (2010) King Stephen. New Haven, US: Yale University Press. . Liddiard, Robert. (2005) Castles in Context: Power, Symbolism and Landscape, 1066 to 1500. Macclesfield, UK: Windgather Press. . Pounds, Norman John Greville. (1994) The Medieval Castle in England and Wales: a Social and Political History. Cambridge: Cambridge University Press. . Powicke, Maurice. (1962) The Thirteenth Century, 1216–1307. Oxford: Clarendon Press. . Thompson, M. W. (1994) The Decline of the Castle. Leicester, UK: Harveys Books. . Warren, W. L. (2000) Henry II. New Haven, US: Yale University Press. . Further reading External links English Heritage Monument No. 360158 Investigation History Buildings and structures in Bedford Castles in Bedfordshire Tourist attractions in Bedfordshire Ruins in Bedfordshire Motte-and-bailey castles