Barber, James David
The Presidential character : predicting performance in the White House / by James David Barber
Prentice-Hall, 1977
 Buku Teks
Ehrligh, Ev
Grant speaks / Ev Ehrlich.
Warner Books, 2000
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Caro, Robert A., author
The years of Lyndon Johnson : the path to power
Alfred A. Knopf, 1983
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Fisher, Louis, author
The law of the executive branch : presidential power
Oxford University Press, 2014
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Neustadt, Richard E., author
Presidential power and the modern presidents : the politics of leadership from Roosevelt to Reagan
The Free Press, 1990
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