edited by Robert Gilpin and Christopher Wright
Columbia University Press , 1965
Buku Teks
Dorey, Peter
SAGE, 2014
Buku Teks
editors, Marlon A. Wui, MA. Glenda S. Lopez
Third World Studies Center, 1997
Buku Teks
Schubert, Glendon
Scott, Foresman, 1965
Buku Teks
Bobrow, Davis B.
Prentice-Hall, 1968
Buku Teks