Funderbank, Charles
Presidents and politics: the limits of power/ Charles Funderburk
Brooks/Cole Publishing, 1982
 Buku Teks
America's ten greatest Presidents
edited by Morton Borden
Rand McNally, 1961
 Buku Teks
Neustadt, Richard E., author
Presidential power : the politics of leadership
John Wiley & Sons, 1961
 Buku Teks
Baldacci, David
Absolute power / David Baldacci
Warner Books, 1996
 Buku Teks
The Presidents : a reference history
editor, Henry F. Graff
Charles Scribner's Sons , 1996
 Buku Referensi
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