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{{cite book|title=Cambridge History of Christianity: Jilid 7, Enlightenment, Reawakening and Revolution 1660-1815|year=2007|isbn=052181605X|editor-last=Brown|editor-first=Stewart J.|editor2-last=Tackett|editor2-first=Timothy}}

(quoted as Franzen) (quoted as Franzen, Papstgeschichte)

(originally published 2009 by Allen Lane, as A History of Christianity'')