Não informado. (1971). Industrial Development Abstracts. United Nations, Industrial Development Organization.
Style de citation Chicago (17e éd.)Não informado. Industrial Development Abstracts. New York: United Nations, Industrial Development Organization, 1971.
Style de citation MLA (8e éd.)Não informado. Industrial Development Abstracts. United Nations, Industrial Development Organization, 1971.
Attention : ces citations peuvent ne pas être correctes à 100%.