APA (7th ed.) Citation

Zakaria. (2009). The post-American world. Penguin Books.

Chicago Style (17th ed.) Citation

Zakaria. The Post-American World. London: Penguin Books, 2009.

MLA (8th ed.) Citation

Zakaria. The Post-American World. Penguin Books, 2009.

Warning: These citations may not always be 100% accurate.