Παραπομπή APA

Hofstadter, D. R. (1980). Gödel, Escher, Bach: An eternal golden braid. Penguin.

Παραπομπή Chicago Style

Hofstadter, Douglas R. Gödel, Escher, Bach: An Eternal Golden Braid. London: Penguin, 1980.

Παραπομπή MLA

Hofstadter, Douglas R. Gödel, Escher, Bach: An Eternal Golden Braid. Penguin, 1980.