APA-referens (7:e uppl.)

Penrose, R. (1989). The Emperor's New Mind. Oxford University Press.

Chicago-referens (17:e uppl.)

Penrose, Roger. The Emperor's New Mind. New York: Oxford University Press, 1989.

MLA-referens (9:e uppl.)

Penrose, Roger. The Emperor's New Mind. Oxford University Press, 1989.