Borneman, W. R. (2009). Polk: The man who transformed the presidency and America (2009 Random House Trade paperbacks ed.). Random House Trade Paperbacks.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBorneman, Walter R. Polk: The Man Who Transformed the Presidency and America. 2009 Random House Trade paperbacks ed. New York: Random House Trade Paperbacks, 2009.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBorneman, Walter R. Polk: The Man Who Transformed the Presidency and America. 2009 Random House Trade paperbacks ed. Random House Trade Paperbacks, 2009.
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