APA-viite (7. p.)

Penrose, R. (1999). The emperor's new mind: Concerning computers, minds, and the laws of physics. Oxford University Press.

Chicago-viite (17. p.)

Penrose, Roger. The Emperor's New Mind: Concerning Computers, Minds, and the Laws of Physics. New York, N.Y., U.S.A. ;New Delhi: Oxford University Press, 1999.

MLA-viite (8. p.)

Penrose, Roger. The Emperor's New Mind: Concerning Computers, Minds, and the Laws of Physics. Oxford University Press, 1999.