Westview Press , 1990
Buku Teks
Ember, Carol R., author
Prentice-Hall, 1985
Buku Teks
Haviland, William A., author
Rinehart and Winston, 1974
Buku Teks
editors, Marlon A. Wui, MA. Glenda S. Lopez
Third World Studies Center, 1997
Buku Teks
Arblaster, Anthony, author
Open University Press, 1987
Buku Teks