Ferrell, R. H. (1971). America as a world power, 1872-1945. University of South Carolina Press.
Chicago Style (17th ed.) CitationFerrell, Robert H. America as a World Power, 1872-1945. Columbia, S.C: University of South Carolina Press, 1971.
MLA (9th ed.) CitationFerrell, Robert H. America as a World Power, 1872-1945. University of South Carolina Press, 1971.
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