APA (7th ed.) Zitazioa
TVE International. What's the green house effects? TVE International.
Chicago Style (17th ed.) Zitazioa
TVE International. What's the Green House Effects? London: TVE International.
MLA (9th ed.) Zitazioa
TVE International. What's the Green House Effects? TVE International.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.