Sachs, Jeffrey D., author
The end of poverty : economic possibilities for our time
Penguin Books, 2005
 Buku Teks
Ascent
National University of singapore, 2008
 Majalah, Jurnal, Buletin
Murchine, Guy
Music of the sphreses : a book about space, time and water the great adventure of our age
Boston: Houghton Mifflin, 1961
 Buku Teks
Bailey, Robert L.
Solar-electrics: research and development / Robert L Bailey.
Ann Arbor Science,, 1980
 Buku Teks
Maddux, John L.
The development philosophy of Robert S. McNamara / John L. Maddux
World Bank, 1981
 Buku Teks
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