APA (7th ed.) Zitazioa
Discovery Channel. (2006). Animals: Discovery Channel Science Collections. Popular Prakashan.
Chicago Style (17th ed.) Zitazioa
Discovery Channel. Animals: Discovery Channel Science Collections. New Delhi: Popular Prakashan, 2006.
MLA (9th ed.) Zitazioa
Discovery Channel. Animals: Discovery Channel Science Collections. Popular Prakashan, 2006.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.