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Prof. G.C. Macauley (Oxford, 1901). sunsite.berkeley.edu/OMACL/Confess/
The Cambridge History of English and American Literature in 18 Volumes (1907–21). Volume II. The End of the Middle Ages. VI. John Gower. § 6. The English Confessio Amantis. www.bartleby.com/212/0606.html