Commodity Research Bureau. (2007). The CRB commodity yearbook 2007. New Jersey: Wiley.
Chicago Stili AlıntıCommodity Research Bureau. The CRB Commodity Yearbook 2007. New Jersey: Wiley, 2007.
MLA AlıntıCommodity Research Bureau. The CRB Commodity Yearbook 2007. New Jersey: Wiley, 2007.
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