Dyfyniad APA

World Bank. (1981). World development report 1981. Published for the World Bank, Oxford University Press.

Dyfyniad Arddull Chicago

World Bank. World Development Report 1981. New York ; Oxford: Published for the World Bank, Oxford University Press, 1981.

Dyfyniad MLA

World Bank. World Development Report 1981. Published for the World Bank, Oxford University Press, 1981.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.