Human development report 1991
United Nations
United Nations Development Programme, 1991
 Buku Teks
Human Development Report 2003
Oxford University Press, 2003
 Buku Teks
Annual report 1993 ; the OPEC Fund for International development
[publisher not identified], 1993
 Buku Teks
World development report 1993 : investing in health
Oxford University Press, 1993
 Buku Teks
Gibb, Hamilton A.R., Sir
Aliran-aliran modern dalam Islam= Modern trens in islam
Tintamas Indonesia, 1954
 Buku Teks