International Monetary Fund. Statistics Dept. Real Sector Division. (1993). A Guide to Direction of trade statistics. International Monetary Fund.
芝加哥风格引文International Monetary Fund. Statistics Dept. Real Sector Division. A Guide to Direction of Trade Statistics. Washington, D. C: International Monetary Fund, 1993.
MLA引文International Monetary Fund. Statistics Dept. Real Sector Division. A Guide to Direction of Trade Statistics. International Monetary Fund, 1993.
警告：这些引文格式不一定是100％准确.