Cita APA (7th ed.)
ebrary, Inc. (2001). Grand challenges in environmental sciences. National Academy Press.
Cita Chicago (17th ed.)
ebrary, Inc. Grand Challenges in Environmental Sciences. Washington, D.C.: National Academy Press, 2001.
Cita MLA (9th ed.)
ebrary, Inc. Grand Challenges in Environmental Sciences. National Academy Press, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.