Fletcher, G. P. (2001). Our secret constitution: How Lincoln redefined American democracy. Oxford University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFletcher, George P. Our Secret Constitution: How Lincoln Redefined American Democracy. Oxford ; New York: Oxford University Press, 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रFletcher, George P. Our Secret Constitution: How Lincoln Redefined American Democracy. Oxford University Press, 2001.
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