Folta Michael E. Fossum 马克·凯利 Alan J. Lindenmoyer David M. Martin Ann McNair Robert R. Meyer Martin G. Mlynczak Philip E. Phillips Craig L. Purdy Daniel
Haven: Yale University Press, 2011, ISBN 978-0300178029 Scott, Ronald McNair. Robert the Bruce: King of Scots. New York: Barnes and Noble. 1982. ISBN 978-1566192705