APA استشهاد

Hofstadter, D. R. (1979). Godel, Escher, Bach: An eternal golden braid. Penguin.

استشهاد بنمط شيكاغو

Hofstadter, Douglas R. Godel, Escher, Bach: An Eternal Golden Braid. England: Penguin, 1979.

MLA استشهاد

Hofstadter, Douglas R. Godel, Escher, Bach: An Eternal Golden Braid. Penguin, 1979.