(1999). United Nations conference on trade and development: Handbook of world mineral trade statistics 1992 - 1997. New York: United Nations.
Chicago-stil citatUnited Nations Conference On Trade and Development: Handbook of World Mineral Trade Statistics 1992 - 1997. New York: United Nations, 1999.
MLA-referensUnited Nations Conference On Trade and Development: Handbook of World Mineral Trade Statistics 1992 - 1997. New York: United Nations, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.