Tohutoro APA (7th ed.)
Duffy, E. (2011). Ten popes who shook the world. Yale University Press.
Tohutoru Kātū Chicago (17th ed.)
Duffy, Eamon. Ten Popes Who Shook the World. New Haven: Yale University Press, 2011.
Tohutoro MLA (9th ed.)
Duffy, Eamon. Ten Popes Who Shook the World. Yale University Press, 2011.
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