Cita APA (7a ed.)

Hofstadter, D. R. (2000). Gödel, Escher, Bach: An eternal golden braid (20th-aniversary ed. / with a new preface by the author.). Penguin Books.

Cita Chicago Style (17a ed.)

Hofstadter, Douglas R. Gödel, Escher, Bach: An Eternal Golden Braid. 20th-aniversary ed. / with a new preface by the author. London: Penguin Books, 2000.

Cita MLA (9a ed.)

Hofstadter, Douglas R. Gödel, Escher, Bach: An Eternal Golden Braid. 20th-aniversary ed. / with a new preface by the author. Penguin Books, 2000.