Loebar, Thomas S
WW Norton, 1961
Buku Teks
Loeber, Thomas S
WW Norton, 1961
Buku Teks
Mason, Edward S.
Published for the Council on Foreign Relations by Harper & Row, 1964
Buku Teks
Kaplan, Jacob J., author
N.Y. Frederick A. Praeger , 1968
Buku Teks
Lancaster, Carol, author
Brooking Institution Press, 2005
Buku Teks