Cochrane, W. W. (1834). The world food problem. New York: Thomas Y.Crowell Company,Inc.
शिकागो स्टाइल उद्धरणCochrane, Willard W. The World Food Problem. New York: Thomas Y.Crowell Company,Inc, 1834.
एमएलए उद्धरणCochrane, Willard W. The World Food Problem. New York: Thomas Y.Crowell Company,Inc, 1834.
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