Scotland and Europe: The Medieval Kingdom and its Contacts with Christendom, c.1215-1545. Volume 1: Religion, Culture and Commerce. East Linton: Tuckwell Press, 2001. ISBN1-86232-172-8.
Freedom and Authority: Scotland, c.1050-1650. East Linton: Tuckwell Press, 2000. [co-edited with Terry Brotherstone, Aberdeen]
Atlas of Medieval Europe. London: Routledge, 1997. [co-edited with Angus Mackay, Edinburgh] ISBN0415122317 Also published in Spanish edition as Atlas de Europa Medieval, Madrid: Cátedra, 1999
'Medieval Scotland, 1100-1560', in R.A. Houston and W. Knox (eds.), The New Penguin History of Scotland. London: Penguin, 2001. [with Alastair J Macdonald, Aberdeen] ISBN0-14-026367-5