Summers, R. E. (1951). America's weapons of psychological warfare. New York: Wilson.
Trích dẫn kiểu ChicagoSummers, Robert E. America's Weapons of Psychological Warfare. New York: Wilson, 1951.
Deismireacht MLASummers, Robert E. America's Weapons of Psychological Warfare. New York: Wilson, 1951.
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