The World Bank annual report 1999
The World Bank Group, 2000
 Buku Referensi
Annual report 1994 International Institute for Asian Studies
International Institute for Asian Studies, 1995
 Buku Teks
Annual report 1999 : The OPEC fund for International development
The OPEC Fund for International Development, 2000
 Buku Teks
Annual report 1999 : food and fertilizer technology center for the Asian and Pasific Region
Food and Fertilizer Technology Center for the Asian and Pasific Region, 1970
 Buku Teks
Gadourek, I.
A Dutch community : social and cultural structure and process in a bulb-growing region in the Netherlands / by I. Gadourek
J.B. Wolters, 1961
 Buku Teks