Hughes, E. J. (1973). The living presidency: The resources and dilemmas of the American Presidential Office / by Emmet John Hughes. Coward, McCann & Geoghegan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHughes, Emmet John. The Living Presidency: The Resources and Dilemmas of the American Presidential Office / by Emmet John Hughes. New York: Coward, McCann & Geoghegan, 1973.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHughes, Emmet John. The Living Presidency: The Resources and Dilemmas of the American Presidential Office / by Emmet John Hughes. Coward, McCann & Geoghegan, 1973.
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