World Bank. (1990). World development report 1990. Oxford and IBH Publishing Company Pvt Ltd.
Chicago Style aipamenaWorld Bank. World Development Report 1990. New Delhi: Oxford and IBH Publishing Company Pvt Ltd, 1990.
MLA aipamenaWorld Bank. World Development Report 1990. Oxford and IBH Publishing Company Pvt Ltd, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.