APA Edition Citation

Hawking, S., & Penrose, R. (2010). Nature of space and time: With a new afterward by the authors. Princeton university press.

Chicago Edition Citation

Hawking, Stephen, and Roger Penrose. Nature of Space and Time: With a New Afterward by the Authors. New Jersey: Princeton university press, 2010.

MLA Edition Citation

Hawking, Stephen, and Roger Penrose. Nature of Space and Time: With a New Afterward by the Authors. Princeton university press, 2010.