APA (7th ed.) Citation

Gaddis, J. L. (2005). The Cold War: A new history. Penguin Books.

Chicago Style (17th ed.) Citation

Gaddis, John Lewis. The Cold War: A New History. New York: Penguin Books, 2005.

MLA (8th ed.) Citation

Gaddis, John Lewis. The Cold War: A New History. Penguin Books, 2005.