APA
"UNITED NATIONS E. A. S. I. A. P. A. (. o., "UNITED NATIONS E. A. S. I. A. P. A. (. o., . (1989). "Commodity trade statistics, 19". New: York United Nations.
Chicago
"UNITED NATIONS ECONOMIC AND SOCIAL INFORMATION AND POLICY ANALYSIS (Department of--)", "UNITED NATIONS ECONOMIC AND SOCIAL INFORMATION AND POLICY ANALYSIS (Department of--)", . 1989. "Commodity trade statistics, 19". New: York United Nations.
Harvard
"UNITED NATIONS E. A. S. I. A. P. A. (. o., "UNITED NATIONS E. A. S. I. A. P. A. (. o., . (1989). "Commodity trade statistics, 19". New: York United Nations.
MLA
"UNITED NATIONS ECONOMIC AND SOCIAL INFORMATION AND POLICY ANALYSIS (Department of--)", "UNITED NATIONS ECONOMIC AND SOCIAL INFORMATION AND POLICY ANALYSIS (Department of--)", . "Commodity trade statistics, 19". New: York United Nations. 1989.
