Dyfyniad APA

World Bank. (2009). Global economic prospects: Commodities at the crossroads. World Bank.

Dyfyniad Arddull Chicago

World Bank. Global Economic Prospects: Commodities at the Crossroads. Washington, DC: World Bank, 2009.

Dyfyniad MLA

World Bank. Global Economic Prospects: Commodities at the Crossroads. World Bank, 2009.

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