Hughes, E. J. (1973). The living presidency: The resources and dilemmas of the American Presidential Office / by Emmet John Hughes. Coward, McCann & Geoghegan.
Chicago-Zitierstil (17. Ausg.)Hughes, Emmet John. The Living Presidency: The Resources and Dilemmas of the American Presidential Office / by Emmet John Hughes. New York: Coward, McCann & Geoghegan, 1973.
MLA-Zitierstil (8. Ausg.)Hughes, Emmet John. The Living Presidency: The Resources and Dilemmas of the American Presidential Office / by Emmet John Hughes. Coward, McCann & Geoghegan, 1973.
警告：這些引文格式不一定是100％准確.