APA (7th ed.) Citation

United Nations. Statistical Office. (1951). Standard international trade classification. 2nd edition.

Chicago Style (17th ed.) Citation

United Nations. Statistical Office. Standard International Trade Classification. 2nd Edition. New York, 1951.

MLA (9th ed.) Citation

United Nations. Statistical Office. Standard International Trade Classification. 2nd Edition. 1951.

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