Woodruff, W. (1975). America's impact on the world. London: Macmillan.
Trích dẫn kiểu ChicagoWoodruff, William. America's Impact On the World. London: Macmillan, 1975.
MLA CitationWoodruff, William. America's Impact On the World. London: Macmillan, 1975.
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