Higham, Robert; Barker, Philip (1992) Timber Castles London: Batsford. . Impey, Edward; Parnell, Geoffrey (2000) The Tower of London: The Official Illustrated History Merrell Publishers in association with Historic Royal Palaces. . King, D.J. Cathcart (1983) Castellarium Anglicanum: An Index and Bibliography of the Castles in England, Wales and the Islands London: Kraus International Publications . King, D.J. Cathcart (1988) The Castle in England and Wales: An Interpretative History London: Croom Helm. . Thompson, Michael (1987) The Decline of the Castle Cambridge: Cambridge University Press. .
Higham, Robert; Barker, Philip (1992) Timber Castles London: Batsford. . Impey, Edward; Parnell, Geoffrey (2000) The Tower of London: The Official Illustrated History Merrell Publishers in association with Historic Royal Palaces. . King, D.J. Cathcart (1983) Castellarium Anglicanum: An Index a?nd Bibliography of the Castles in England, Wales and the Islands London: Kraus International Publications . King, D.J. Cathcart (1988) The Castle in England and Wales: :An Interpretative History London: Croom Helm. . Thompson, Michael (1987) The Decline of the Castle Cambridge: Cambridge University Press. .