Ferguson, N. (2004). Colossus: The price of America's empire. Penguin Press.
Lua i Stíl Chicago (17ú heag.)Ferguson, Niall. Colossus: The Price of America's Empire. New York: Penguin Press, 2004.
Lua MLA (9ú heag.)Ferguson, Niall. Colossus: The Price of America's Empire. Penguin Press, 2004.
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