APA (7th ed.) Zitazioa
Cowen, R. (1996). Beyond discovery: The ozone depletion phenomenon. National Aademy of Sciences.
Chicago Style (17th ed.) Zitazioa
Cowen, Ron. Beyond Discovery: The Ozone Depletion Phenomenon. [Washington, D.C.]: National Aademy of Sciences, 1996.
MLA (9th ed.) Zitazioa
Cowen, Ron. Beyond Discovery: The Ozone Depletion Phenomenon. National Aademy of Sciences, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.