Cita APA (7th ed.)
ebrary, Inc. (1999). New strategies for America's watersheds. National Academy Press.
Cita Chicago (17th ed.)
ebrary, Inc. New Strategies for America's Watersheds. Washington, D.C.: National Academy Press, 1999.
Cita MLA (9th ed.)
ebrary, Inc. New Strategies for America's Watersheds. National Academy Press, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.