Harcourt Brace Javanovich Publ., 1992
Buku Teks
Hudson, Ray, author
Prentice-Hall, 2000
Buku Teks
edited by Mats Berdal and Achim Wennmann
The International Institute for Strategic Studies (IISS), 2010
Buku Teks
Hudson, Ray, author
Prentice-Hall, 2000
Buku Teks
Baerwald, Hans H.
Cambridge University Press, 1974
Buku Teks