Choices: The Magazine of Food, Farm & Resource Issues. Agricultural & Applied Economics Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रChoices: The Magazine of Food, Farm & Resource Issues. Agricultural & Applied Economics Association.
एमएलए (9वां संस्करण) प्रशस्ति पत्रChoices: The Magazine of Food, Farm & Resource Issues. Agricultural & Applied Economics Association.
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