National food review Economics, Statistics, and Cooperatives Service, U.S. Department of Agriculture. [electronic resource].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNational Food Review Economics, Statistics, and Cooperatives Service, U.S. Department of Agriculture. [electronic Resource].
एमएलए (9वां संस्करण) प्रशस्ति पत्रNational Food Review Economics, Statistics, and Cooperatives Service, U.S. Department of Agriculture. [electronic Resource].
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