Hughes, E. J. (1973). The living presidency: The resources and dilemmas of the American Presidential Office. Baltimore, Maryland: Penguin Books.
Παραπομπή Chicago StyleHughes, Emmet John. The Living Presidency: The Resources and Dilemmas of the American Presidential Office. Baltimore, Maryland: Penguin Books, 1973.
Παραπομπή MLAHughes, Emmet John. The Living Presidency: The Resources and Dilemmas of the American Presidential Office. Baltimore, Maryland: Penguin Books, 1973.
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