APA Edition Citation

Hawking, S. (2007). George's secret key to the universe. Doubleday.

Chicago Edition Citation

Hawking, Stephen. George's Secret Key to the Universe. London: Doubleday, 2007.

MLA Edition Citation

Hawking, Stephen. George's Secret Key to the Universe. Doubleday, 2007.

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