Não informado. (1971). Industrial Development Abstracts. United Nations, Industrial Development Organization.
Cita Chicago Style (17a ed.)Não informado. Industrial Development Abstracts. New York: United Nations, Industrial Development Organization, 1971.
Cita MLA (8a ed.)Não informado. Industrial Development Abstracts. United Nations, Industrial Development Organization, 1971.
Precaución: Estas citas no son 100% exactas.