Mayer, Thomas, author
Random House, 1968
Buku Teks
Anansya Ralia, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2017
UI - Skripsi (Membership)
Prager, Jonas
Random House , 1971
Buku Teks
Makin, John H.
American Entreprise Institute, 1991
Buku Teks
Hansen, Alvin H. (Alvin Harvey), 1887-1975, author
W.W. Norton, 1941
Buku Teks