King, Felicity Savage, author
Oxford University Press, 1995
Buku Teks
Jelliffe, Derrick B., author
Office of War on Hunger Agency for International Development , 1969
Buku Teks
Page, Sheila, author
Overseas Development Institute, 2000
Buku Teks
edited by Stephan Haggard, Chung H. Lee and Sylvia Maxfield
Cornell University Press, 1993
Buku Teks
World Bank, 1980
Buku Teks