Não informado. (1969). Foreign economic trends and their implications for the United States. U.S. Department of Commerce.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Foreign Economic Trends and Their Implications for the United States. Washington: U.S. Department of Commerce, 1969.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Foreign Economic Trends and Their Implications for the United States. U.S. Department of Commerce, 1969.
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