APA
Dept. Of International Economic & Social Affairs, Statistical Office, . (1986). Classification By Broad Economic Catagories: Satistical Papers - Series M,No.53,Rev.2. U.N: New York.
Chicago
Dept. Of International Economic & Social Affairs, Statistical Office, . 1986. Classification By Broad Economic Catagories: Satistical Papers - Series M,No.53,Rev.2. U.N: New York.
Harvard
Dept. Of International Economic & Social Affairs, Statistical Office, . (1986). Classification By Broad Economic Catagories: Satistical Papers - Series M,No.53,Rev.2. U.N: New York.
MLA
Dept. Of International Economic & Social Affairs, Statistical Office, . Classification By Broad Economic Catagories: Satistical Papers - Series M,No.53,Rev.2. U.N: New York. 1986.
