Kilmeade, B. (2013). George washington's secret six: The spy ring that saved the american revolution.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKilmeade, Brian. George Washington's Secret Six: The Spy Ring That Saved the American Revolution. 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKilmeade, Brian. George Washington's Secret Six: The Spy Ring That Saved the American Revolution. 2013.
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