International Monetary Fund. Real Sector Division & ebrary, Inc. (1993). A Guide to Direction of trade statistics. International Monetary Fund.
Chicago-čujuhus (17. p.)International Monetary Fund. Real Sector Division juo Inc ebrary. A Guide to Direction of Trade Statistics. Washington, D.C.: International Monetary Fund, 1993.
MLA-čujuhus (9. p.)International Monetary Fund. Real Sector Division juo Inc ebrary. A Guide to Direction of Trade Statistics. International Monetary Fund, 1993.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.