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David Edward Luscombe. "Peter Abelard". Encyclopædia Britannica, Inc. Archived from the original on 2 May 2015.
King, Peter (1992). "Peter Abelard"(PDF). The Dictionary of Literary Biography. Vol. 115. p. 13. Archived(PDF) from the original on 9 January 2006. Retrieved 21 July 2006.