Cita APA (7th ed.)
Hofstadter, D. R. Godel, Escher, Bach: An eternal golden braid. Penguin.
Cita Chicago (17th ed.)
Hofstadter, Douglas R. Godel, Escher, Bach: An Eternal Golden Braid. Penguin.
Cita MLA (9th ed.)
Hofstadter, Douglas R. Godel, Escher, Bach: An Eternal Golden Braid. Penguin.
Atenció: Aquestes cites poden no estar 100% correctes.