Allen, R. (2015). Episcopal acta in Normandy, 911-1204: The charters of the bishops of Avranches, Coutances and Sées. Boydell Press.
Chicago-viite (17. p.)Allen, R. Episcopal Acta in Normandy, 911-1204: The Charters of the Bishops of Avranches, Coutances and Sées. Boydell Press, 2015.
MLA-viite (9. p.)Allen, R. Episcopal Acta in Normandy, 911-1204: The Charters of the Bishops of Avranches, Coutances and Sées. Boydell Press, 2015.
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