Hilling, David, author
Routledge, 1996
Buku Teks
Jha, Raghbendra, author
Routledge, 1994
Buku Teks
Page, Sheila, author
Overseas Development Institute, 2000
Buku Teks
Edited by Wilbert E. Moore and Neil J. Smelser.
Prentice-Hall, 1966
Buku Teks
edited by Stephan Haggard, Chung H. Lee and Sylvia Maxfield
Cornell University Press, 1993
Buku Teks