United Nations. Department of Economic and Social Affairs Statistics Division. (2004). International merchandise trade statistics: Compilers manual. United Nations.
Παραπομπή σε μορφή Chicago (17η εκδ.)United Nations. Department of Economic and Social Affairs Statistics Division. International Merchandise Trade Statistics: Compilers Manual. New York: United Nations, 2004.
Παραπομπή σε μορφή MLA (9th εκδ.)United Nations. Department of Economic and Social Affairs Statistics Division. International Merchandise Trade Statistics: Compilers Manual. United Nations, 2004.
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