International Monetary Fund. Real Sector Division & ebrary, Inc. (1993). A Guide to Direction of trade statistics. International Monetary Fund.
Lua i Stíl Chicago (17ú heag.)International Monetary Fund. Real Sector Division agus Inc ebrary. A Guide to Direction of Trade Statistics. Washington, D.C.: International Monetary Fund, 1993.
Lua MLA (9ú heag.)International Monetary Fund. Real Sector Division agus Inc ebrary. A Guide to Direction of Trade Statistics. International Monetary Fund, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.