APA (7th ed.) Zitazioa
Roberts, A. (2014). Napoleon: A Life. Penguin Books.
Chicago Style (17th ed.) Zitazioa
Roberts, Andrew. Napoleon: A Life. New York: Penguin Books, 2014.
MLA (9th ed.) Zitazioa
Roberts, Andrew. Napoleon: A Life. Penguin Books, 2014.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.