Dyfyniad APA

(1992). World Development Report 1992: Development and the Environment. World Bank.

Dyfyniad Arddull Chicago

World Development Report 1992: Development and the Environment. Washington D.C: World Bank, 1992.

Dyfyniad MLA

World Development Report 1992: Development and the Environment. World Bank, 1992.

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