(原始内容存档于2022-02-01). Peacemakers and Partisans Bishops and Political Reform in England 1213-1268 - Research Portal, King's College, London. kclpure.kcl.ac.uk. [2021-07-27]
of Ecclesiastical Art and Institutions, From Primitive to Modern Times, London: L. Reeve and Co., p168, "In the proivince of Canterbury the bishops form