APA
"UNITED NATION E. A. S. A. (. o., "UNITED NATION E. A. S. A. (. o., . (1956). Non ferrous metals in under developed countries. New: York United Nations USA.
Chicago
"UNITED NATION ECONOMIC AND SOCIAL AFFAIR (Deptt of-)", "UNITED NATION ECONOMIC AND SOCIAL AFFAIR (Deptt of-)", . 1956. Non ferrous metals in under developed countries. New: York United Nations USA.
Harvard
"UNITED NATION E. A. S. A. (. o., "UNITED NATION E. A. S. A. (. o., . (1956). Non ferrous metals in under developed countries. New: York United Nations USA.
MLA
"UNITED NATION ECONOMIC AND SOCIAL AFFAIR (Deptt of-)", "UNITED NATION ECONOMIC AND SOCIAL AFFAIR (Deptt of-)", . Non ferrous metals in under developed countries. New: York United Nations USA. 1956.
