APA (7th ed.) Citation

United Nations. Statistical Office. (1981). Commodity indexes for the standard international trade classification, revision 2.

Chicago Style (17th ed.) Citation

United Nations. Statistical Office. Commodity Indexes for the Standard International Trade Classification, Revision 2. New York, 1981.

MLA (9th ed.) Citation

United Nations. Statistical Office. Commodity Indexes for the Standard International Trade Classification, Revision 2. 1981.

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