Withington, A. F. (1991). Toward a more perfect union: Virtue and the formation of American republics. Oxford University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWithington, Ann Fairfax. Toward a More Perfect Union: Virtue and the Formation of American Republics. New York ; Toronto: Oxford University Press, 1991.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWithington, Ann Fairfax. Toward a More Perfect Union: Virtue and the Formation of American Republics. Oxford University Press, 1991.
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