APA-referens (7:e uppl.)

National Research Council (U.S.). Committee on U.S. Geological Survey Water Resources Research. (1997). Watershed research in the U.S. Geological Survey. National Academy Press.

Chicago-referens (17:e uppl.)

National Research Council (U.S.). Committee on U.S. Geological Survey Water Resources Research. Watershed Research in the U.S. Geological Survey. Washington, D.C.: National Academy Press, 1997.

MLA-referens (9:e uppl.)

National Research Council (U.S.). Committee on U.S. Geological Survey Water Resources Research. Watershed Research in the U.S. Geological Survey. National Academy Press, 1997.