United Nations. Industrial Development Organization. (1972). A guide to industrial purchasing. United Nations.
Chicago Style (17th ed.) CitationUnited Nations. Industrial Development Organization. A Guide to Industrial Purchasing. New York: United Nations, 1972.
MLA (9th ed.) CitationUnited Nations. Industrial Development Organization. A Guide to Industrial Purchasing. United Nations, 1972.
Warning: These citations may not always be 100% accurate.