World Bank. (2009). Global economic prospects: Commodities at the crossroads. World Bank.
Chicago (17e ed.) BronvermeldingWorld Bank. Global Economic Prospects: Commodities at the Crossroads. Washington, DC: World Bank, 2009.
MLA (8e ed.) BronvermeldingWorld Bank. Global Economic Prospects: Commodities at the Crossroads. World Bank, 2009.
Let op: Deze citaties zijn niet altijd 100% accuraat.