Não informado. (2002). Industrial Commodity Statistics Yearbook. United Nations.
Style de citation Chicago (17e éd.)Não informado. Industrial Commodity Statistics Yearbook. New York: United Nations, 2002.
Style de citation MLA (8e éd.)Não informado. Industrial Commodity Statistics Yearbook. United Nations, 2002.
Attention : ces citations peuvent ne pas être correctes à 100%.