Choe, B. (1990). Commodity price forecasts and future prices. International Economics Department, World Bank.
Cita Chicago (17th ed.)Choe, Boum-Jong. Commodity Price Forecasts and Future Prices. Washington, DC: International Economics Department, World Bank, 1990.
Cita MLA (9th ed.)Choe, Boum-Jong. Commodity Price Forecasts and Future Prices. International Economics Department, World Bank, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.