APA (7th ed.) Citation

Hawking, S., & Mlodinow, L. (2008). A Brief History of Time. Bantam Press.

Chicago Style (17th ed.) Citation

Hawking, Stephen, and Leonard Mlodinow. A Brief History of Time. London: Bantam Press, 2008.

MLA (9th ed.) Citation

Hawking, Stephen, and Leonard Mlodinow. A Brief History of Time. Bantam Press, 2008.