อ้างอิง ของ ปราสาทโดเวอร์

  1. ↑ Kerr, Nigel (1984). A Guide to Norman Sites in Britain. Granada. p. 44. ISBN 0-586-08445-2.
  2. ↑ Broughton, Bradford B. (1988). Dictionary of Medieval Knighthood and Chivalry. Greenwood Press. p. 102. ISBN 0-313-25347-1.
  3. 1 2 Prestwich, Michael (1999). Armies and Warfare in the Middle Ages. Yale University Press. p. 285. ISBN 0-300-07663-0.
  • Goodall, John, "Dover Castle and the Great Siege of 1216", Chateau Gaillard v.19 (2000) (the online version lacks the diagrams of the print version)
  • Jeffrey, Kate, "Dover castle", Published by English Heritage, 1997