edited by Sunil Mani, Henny Romijn
United Nations University Press, 2004
Buku Teks
Englert, Robert D.
McGraw-Hill, 1990
Buku Teks
Unesco Press, 1975
Buku Teks
Page, Sheila
Overseas Development Institute, 2000
Buku Teks
edited by Stephan Haggard, Chung H. Lee and Sylvia Maxfield
Cornell University Press, 1993
Buku Teks