APA (7e ed.) Bronvermelding

Não informado. (1968). Commodity trade and price trends. International Bank for Reconstruction and Development.

Chicago (17e ed.) Bronvermelding

Não informado. Commodity Trade and Price Trends. Washington: International Bank for Reconstruction and Development, 1968.

MLA (8e ed.) Bronvermelding

Não informado. Commodity Trade and Price Trends. International Bank for Reconstruction and Development, 1968.

Let op: Deze citaties zijn niet altijd 100% accuraat.