National Research Council (U.S.). Committee to Review the U.S. Geological Survey Concept of the National Map, Geological Survey (U.S.), National Academy of Sciences (U.S.), & Cowen, D. J. (2003). Weaving a national map: Review of the U.S. Geological Survey concept of the national map. National Academies Press.
Chicago-referens (17:e uppl.)National Research Council (U.S.). Committee to Review the U.S. Geological Survey Concept of the National Map, Geological Survey (U.S.), National Academy of Sciences (U.S.), och David J. Cowen. Weaving a National Map: Review of the U.S. Geological Survey Concept of the National Map. Washington, D.C.: National Academies Press, 2003.
MLA-referens (9:e uppl.)National Research Council (U.S.). Committee to Review the U.S. Geological Survey Concept of the National Map, et al. Weaving a National Map: Review of the U.S. Geological Survey Concept of the National Map. National Academies Press, 2003.