World development report 1992 : development and the environment
Oxford University Press, 1992
 Buku Referensi
The least developed countries 1998 report
United Nations
United Nations, 1998
 Buku Teks
The least developed countries 1995 report
United Nations
United Nations , 1995
 Buku Teks
Trade and development report, 1998
United Nations
United Nations, 1998
 Buku Teks
Proceedings of the world bank annual conference on development economics 1992
editor, Lawrence H. Summers and Shekhar Shah
World Bank, 1993
 Buku Teks
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