APA (7th ed.) Citation

Penrose, R. (2004). The road to reality: A complete guide to the laws of the universe. A.A. Knopf.

Chicago Style (17th ed.) Citation

Penrose, Roger. The Road to Reality: A Complete Guide to the Laws of the Universe. New York: A.A. Knopf, 2004.

MLA (9th ed.) Citation

Penrose, Roger. The Road to Reality: A Complete Guide to the Laws of the Universe. A.A. Knopf, 2004.