Não informado. (1962). Foreign Agricultural Trade of the United States. U.S. Department of Agriculture, Economic Research Service.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Foreign Agricultural Trade of the United States. Washington: U.S. Department of Agriculture, Economic Research Service, 1962.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Foreign Agricultural Trade of the United States. U.S. Department of Agriculture, Economic Research Service, 1962.
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