(2009). 2008 international trade statistics yearbook, Volume I, Trade by country. United Nations.
Chicago-Zitierstil (17. Ausg.)2008 International Trade Statistics Yearbook, Volume I, Trade by Country. New York: United Nations, 2009.
MLA-Zitierstil (9. Ausg.)2008 International Trade Statistics Yearbook, Volume I, Trade by Country. United Nations, 2009.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.