APA (7th ed.) Citation

Ferguson. (2005). Colossus: The rise and fall of the American empire. Penguin Books.

Chicago Style (17th ed.) Citation

Ferguson. Colossus: The Rise and Fall of the American Empire. New York: Penguin Books, 2005.

MLA (8th ed.) Citation

Ferguson. Colossus: The Rise and Fall of the American Empire. Penguin Books, 2005.