Said, Abdul Aziz, author
Prentice-Hall, 1995
Buku Teks
George, Jim, author
Lynne Reinner, 1994
Buku Teks
Holsti, Kalevi J., author
Prentice-Hall, 1977
Buku Teks
Holsti, Kalevi J., author
Prentice-Hall, 1992
Buku Teks
edited by Klaus Knorr and James N. Rosenau
Priceton University Press, 1969
Buku Teks