APA Style

Bremmer, Ian. (2015). Superpower : three choices for America's role in the world . Great Britain: Portfolio Penguin.

Chicago Style

Bremmer, Ian. Superpower : three choices for America's role in the world. Great Britain: Portfolio Penguin, 2015. Text.

MLA Style

Bremmer, Ian. Superpower : three choices for America's role in the world. Great Britain: Portfolio Penguin, 2015. Text.

Turabian Style

Bremmer, Ian. Superpower : three choices for America's role in the world. Great Britain: Portfolio Penguin, 2015. Print.