Cita APA (7th ed.)
Cowen, R. (1996). Beyond discovery: The ozone depletion phenomenon. National Aademy of Sciences.
Cita Chicago (17th ed.)
Cowen, Ron. Beyond Discovery: The Ozone Depletion Phenomenon. [Washington, D.C.]: National Aademy of Sciences, 1996.
Cita MLA (9th ed.)
Cowen, Ron. Beyond Discovery: The Ozone Depletion Phenomenon. National Aademy of Sciences, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.