International Monetary Fund. Real Sector Division & ebrary, Inc. (1993). A Guide to Direction of trade statistics. International Monetary Fund.
Citação norma ChicagoInternational Monetary Fund. Real Sector Division and Inc ebrary. A Guide to Direction of Trade Statistics. Washington, D.C.: International Monetary Fund, 1993.
Citação norma MLAInternational Monetary Fund. Real Sector Division and Inc ebrary. A Guide to Direction of Trade Statistics. International Monetary Fund, 1993.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.