APA (7th ed.) Zitazioa

(1990). Global alert: The ozone pollution crisis / Jack Fishman and Robert Kalish.

Chicago Style (17th ed.) Zitazioa

Global Alert: The Ozone Pollution Crisis / Jack Fishman and Robert Kalish. 1990.

MLA (9th ed.) Zitazioa

Global Alert: The Ozone Pollution Crisis / Jack Fishman and Robert Kalish. 1990.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.