== Udvalgte værker ==
* (1975) "Shakespeare and his Theatre", Longman, {{ISBN|0-582-20539-5}}
* (1985) ''The Medieval Archer'', The Boydell Press, {{ISBN|0-85115-194-9}}
* (1988) "Introduction to The Buckinghamshire Domesday", Alecto Historical Editions, {{ISBN|0-948459-86-7}}
* (1992) ''The Medieval Siege'', The Boydell Press, {{ISBN|1-85285-528-2}}
* (1996) ''Stephen and Matilda: Civil War of 1139-53'', Sutton Publishing, {{ISBN|0-7509-0612-X}}
* (1997) ''Philip Augustus: King of France, 1180-1223'', Longman, {{ISBN|0-582-06058-3}}
* (1998) ''The Battle of Hastings'', Sutton Publishing, {{ISBN|0-7509-1291-X}}
* (2004) ''The Routledge Companion to Medieval Warfare'', London: Routledge, {{ISBN|0-415-22126-9}}
* (2007) ''The Capetians: Kings of France 987 - 1314'', Hambledon Continuum, {{ISBN|1-85285-528-2}}
* (2010) ''Robin Hood'', Amberley Publishing, {{ISBN|978-1-84868-185-9}}
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