America's ten greatest Presidents
edited by Morton Borden
Rand McNally, 1961
 Buku Teks SO
Baldacci, David
Absolute power / David Baldacci
Warner Books, 1996
 Buku Teks SO
Neustadt, Richard E.
Presidential power : the politics of leadership
John Wiley & Sons, 1961
 Buku Teks
The Presidents : a reference history
editor, Henry F. Graff
Charles Scribner's Sons , 1996
 Buku Referensi
Neustadt, Richard E.
Presidential power and the modern presidents : the politics of leadership from Roosevelt to Reagan
Free Press, 1990
 Buku Teks SO