Nelson, Julie A.
Economics for humans
University of Chicago Press, 2006
 Buku Teks SO
Virtual futures
edited by Joan Broadhurst Dixon and Eric J. Cassidy
Routledge, 1998
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Information futures
 Artikel Jurnal
Duffie, Darrell
Futures markets
Prentice-Hall, 1989
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Jones, Howard Palfrey
Indonesia: the possible dream
Ayu Mas, 1977
 Buku Teks SO