APA
"UNITED NATIONS E. A. S. I. A. P. A. (. f., "UNITED NATIONS E. A. S. I. A. P. A. (. f., . (1994). Commodity trade statistics 1991. New: York U.N.
Chicago
"UNITED NATIONS ECONOMIC AND SOCIAL INFORMATION AND POLICY ANALYSIS (Department for).", "UNITED NATIONS ECONOMIC AND SOCIAL INFORMATION AND POLICY ANALYSIS (Department for).", . 1994. Commodity trade statistics 1991. New: York U.N.
Harvard
"UNITED NATIONS E. A. S. I. A. P. A. (. f., "UNITED NATIONS E. A. S. I. A. P. A. (. f., . (1994). Commodity trade statistics 1991. New: York U.N.
MLA
"UNITED NATIONS ECONOMIC AND SOCIAL INFORMATION AND POLICY ANALYSIS (Department for).", "UNITED NATIONS ECONOMIC AND SOCIAL INFORMATION AND POLICY ANALYSIS (Department for).", . Commodity trade statistics 1991. New: York U.N. 1994.
