Royot, Daniel (2007). Divided Loyalties in a Doomed Empire. University of Delaware Press, شابک۹۷۸−۰−۸۷۴۱۳−۹۶۸−۶, p. 138: "Charles Maurice de Talleyrand-Périgord was the essence of the metamorphic talent inherent in French aristocracy. The so-called Diable boiteux (lame devil), born in 1754 was not fit for armed service."
Louis S. Greenbaum, "Talleyrand and His Uncle: The Genesis of a Clerical Career." Journal of Modern History 29.3 (1957): 226-236 online.
Louis S. Greenbaum, "Talleyrand as Agent-General of the Clergy of France: A Study in Comparative Influence." Catholic Historical Review 48.4 (1963): 473-486 online