Riebling, M. (2015). Church of spies: The Pope's secret war against Hitler. Basic Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRiebling, Mark. Church of Spies: The Pope's Secret War Against Hitler. New York, NY: Basic Books, 2015.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRiebling, Mark. Church of Spies: The Pope's Secret War Against Hitler. Basic Books, 2015.
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