Gallagher, C. R. (2008). Vatican secret diplomacy: Joseph P. Hurley and Pope Pius XII. Yale University Press.
Lua i Stíl Chicago (17ú heag.)Gallagher, Charles R. Vatican Secret Diplomacy: Joseph P. Hurley and Pope Pius XII. New Haven: Yale University Press, 2008.
Lua MLA (9ú heag.)Gallagher, Charles R. Vatican Secret Diplomacy: Joseph P. Hurley and Pope Pius XII. Yale University Press, 2008.
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