APA (7th ed.) Citation

Penrose, R. (2005). The road to reality: A complete guide to the laws of the universe. Vintage Books, c2004.

Chicago Style (17th ed.) Citation

Penrose, Roger. The Road to Reality: A Complete Guide to the Laws of the Universe. London: Vintage Books, c2004, 2005.

MLA (9th ed.) Citation

Penrose, Roger. The Road to Reality: A Complete Guide to the Laws of the Universe. Vintage Books, c2004, 2005.