APA
United Nations, . (1968). International Standard Industrial Classification Of All Economic Activities: Satistical Papers - Series M, No. 4, Rev. 2. New York: U.N.
Chicago
United Nations, . 1968. International Standard Industrial Classification Of All Economic Activities: Satistical Papers - Series M, No. 4, Rev. 2. New York: U.N.
Harvard
United Nations, . (1968). International Standard Industrial Classification Of All Economic Activities: Satistical Papers - Series M, No. 4, Rev. 2. New York: U.N.
MLA
United Nations, . International Standard Industrial Classification Of All Economic Activities: Satistical Papers - Series M, No. 4, Rev. 2. New York: U.N. 1968.
TextSeries: International Standard Industrial ClassificationsPublication details: New York U.N. 1968Description: iii,48pISBN: 
Statistical Publications
