APA aipamena

463627 Cumming, C. (2001). A spy by nature. London : Penguin Books.

Chicago Style aipamena

463627 Cumming, Charles. A Spy by Nature. London : Penguin Books, 2001.

MLA aipamena

463627 Cumming, Charles. A Spy by Nature. London : Penguin Books, 2001.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.