Hollister, C. Warren
Medieval Europe : a short history
John Wiley & Sons, 1968
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Scott, Jonathan F.
Readings in medieval history
Appleton Century Croffs, 1933
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Brown, Peter, 1935-
The rise of Western Christendom: triumph and diversity, A.D. 200-1000
Wiley-Blackwell, 2013
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Re-reading english
edited by Peter Widdowson
Methuen , 1982
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Murray, Alexander
Conscience and authority in the medieval church
Oxford University Press, 2016
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