APA (7th ed.) Zitazioa
(1986). The incredible machine (ed.). The national geographic society.
Chicago Style (17th ed.) Zitazioa
The Incredible Machine. ed. Washington: The national geographic society, 1986.
MLA (9th ed.) Zitazioa
The Incredible Machine. ed. The national geographic society, 1986.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.