APA (7th ed.) Citation

United Nations. Industrial Development Organization. (1973). The petrochemical industry.

Chicago Style (17th ed.) Citation

United Nations. Industrial Development Organization. The Petrochemical Industry. New York, United Nations, 1973.

MLA (9th ed.) Citation

United Nations. Industrial Development Organization. The Petrochemical Industry. 1973.

Warning: These citations may not always be 100% accurate.