APA (7e ed.) Bronvermelding

Labys, W. C. (1988). Recent developments in commodity modeling: A World Bank focus. International Economics Dept., World Bank.

Chicago (17e ed.) Bronvermelding

Labys, Walter C. Recent Developments in Commodity Modeling: A World Bank Focus. Washington, D.C: International Economics Dept., World Bank, 1988.

MLA (9e ed.) Bronvermelding

Labys, Walter C. Recent Developments in Commodity Modeling: A World Bank Focus. International Economics Dept., World Bank, 1988.