Ferrie, R. (1999). The world turned upside down: George Washington and the Battle of Yorktown. Holiday House.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFerrie, Richard. The World Turned Upside Down: George Washington and the Battle of Yorktown. New York: Holiday House, 1999.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFerrie, Richard. The World Turned Upside Down: George Washington and the Battle of Yorktown. Holiday House, 1999.
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