APA aipamena

(2004). The Americana annual 2004an encyclopedia of the events of 2003. Grolier.

Chicago Style aipamena

The Americana Annual 2004an Encyclopedia of the Events of 2003. Grolier, 2004.

MLA aipamena

The Americana Annual 2004an Encyclopedia of the Events of 2003. Grolier, 2004.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.