APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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