IBRD. (1993). Price Prospects For Major Primary Commodities 1990-2005 . C. 2: Agricultural Products, Fertilizers, Tropicaltimber (1. Edisyon.). IBRD.
Chicago Style (17. basım) AtıfIBRD. Price Prospects For Major Primary Commodities 1990-2005 . C. 2: Agricultural Products, Fertilizers, Tropicaltimber. 1. Edisyon. Washington: IBRD, 1993.
MLA (9th ed.) AtıfIBRD. Price Prospects For Major Primary Commodities 1990-2005 . C. 2: Agricultural Products, Fertilizers, Tropicaltimber. 1. Edisyon. IBRD, 1993.
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