Labys, W. C. (1988). Recent developments in commodity modeling: A World Bank focus. International Economics Dept., World Bank.
芝加哥风格引文Labys, Walter C. Recent Developments in Commodity Modeling: A World Bank Focus. Washington, D.C: International Economics Dept., World Bank, 1988.
MLA引文Labys, Walter C. Recent Developments in Commodity Modeling: A World Bank Focus. International Economics Dept., World Bank, 1988.
警告：这些引文格式不一定是100％准确.