Smith, John Malcolm
Powers of the President during crises/ John Malcolm Smith
Public affairs Press, 1960
 Buku Teks
Fisher, Louis
The law of the executive branch : presidential power
Oxford University Press, 2014
 Buku Teks
Miller, Arthur S.
Presidential power in a nut shell
West Publishing, 1977
 Buku Teks SO
Hunter, Robert E.
Presidential control pf foreign policy
Praeger, 1982
 Buku Teks
Cater, Douglass
Power in Washington / Douglass Cater
Vintage Books, 1964
 Buku Teks SO