Não informado. (2001). Direction of Trade Yearbook. International Monetary Fund.
Chicago-referens (17:e uppl.)Não informado. Direction of Trade Yearbook. Washington: International Monetary Fund, 2001.
MLA-referens (8:e uppl.)Não informado. Direction of Trade Yearbook. International Monetary Fund, 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.