United Nations. Statistical Office. (1956). Indexes to the International standard industrial classification of all economic activities. [publisher not identified].
Chicago Style (17th ed.) CitationUnited Nations. Statistical Office. Indexes to the International Standard Industrial Classification of All Economic Activities. New York: [publisher not identified], 1956.
MLA (9th ed.) CitationUnited Nations. Statistical Office. Indexes to the International Standard Industrial Classification of All Economic Activities. [publisher not identified], 1956.
Warning: These citations may not always be 100% accurate.