APA
UNITED NATIONS E. A. S. D. (. o., UNITED NATIONS E. A. S. D. (. o., . (1993). Commodity trade statistics 1991. New York: U.N.
Chicago
UNITED NATIONS ECONOMIC AND SOCIAL DEVELOPMENT (Deptt of-), UNITED NATIONS ECONOMIC AND SOCIAL DEVELOPMENT (Deptt of-), . 1993. Commodity trade statistics 1991. New York: U.N.
Harvard
UNITED NATIONS E. A. S. D. (. o., UNITED NATIONS E. A. S. D. (. o., . (1993). Commodity trade statistics 1991. New York: U.N.
MLA
UNITED NATIONS ECONOMIC AND SOCIAL DEVELOPMENT (Deptt of-), UNITED NATIONS ECONOMIC AND SOCIAL DEVELOPMENT (Deptt of-), . Commodity trade statistics 1991. New York: U.N. 1993.
