(1992). Industrial statistics yearbook. 1990. Vol. II. Commodity production statistics. 1981 - 1990 ([1st ed.].). United Nations.
Chicago-Zitierstil (17. Ausg.)Industrial Statistics Yearbook. 1990. Vol. II. Commodity Production Statistics. 1981 - 1990. [1st ed.]. New York: United Nations, 1992.
MLA-Zitierstil (9. Ausg.)Industrial Statistics Yearbook. 1990. Vol. II. Commodity Production Statistics. 1981 - 1990. [1st ed.]. United Nations, 1992.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.