Não informado. (1969). Foreign economic trends and their implications for the United States. U.S. Department of Commerce.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Foreign Economic Trends and Their Implications for the United States. Washington: U.S. Department of Commerce, 1969.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Foreign Economic Trends and Their Implications for the United States. U.S. Department of Commerce, 1969.
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