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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रValdés, Alberto. Agricultural Support Policies in Transition Economies. Washington, D.C.: World Bank, 2000.
एमएलए (9वां संस्करण) प्रशस्ति पत्रValdés, Alberto. Agricultural Support Policies in Transition Economies. World Bank, 2000.