Indonesia in the 1990's
1855650228
Euromoney Publication, 1991
 Buku Teks SO
The World competitiveness report 1990
The World Economic Forum, 1990
 Buku Teks
China briefing, 1990
edited by Anthony J. Kane
Westview Press, 1990
 Buku Teks SO
Philippine national bibliography 1990
The National Library of The Philippines, 1992
 Buku Referensi
The guinness book of records 1990
editor, Donald McFarlan
Guinness Publishing, 1990
 Buku Referensi