APA (7e ed.) Bronvermelding

International Monetary Fund. Real Sector Division & ebrary, Inc. (1993). A Guide to Direction of trade statistics. International Monetary Fund.

Chicago (17e ed.) Bronvermelding

International Monetary Fund. Real Sector Division en Inc ebrary. A Guide to Direction of Trade Statistics. Washington, D.C.: International Monetary Fund, 1993.

MLA (9e ed.) Bronvermelding

International Monetary Fund. Real Sector Division en Inc ebrary. A Guide to Direction of Trade Statistics. International Monetary Fund, 1993.