National Research Council (U.S.). Committee on Research Priorities in Geography at the U.S. Geological Survey & ebrary, Inc. (2002). Research opportunities in geography at the U.S. Geological Survey. National Academies Press.
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Chicago Style (17th ed.) Zitazioa
National Research Council (U.S.). Committee on Research Priorities in Geography at the U.S. Geological Survey eta Inc ebrary. Research Opportunities in Geography at the U.S. Geological Survey. Washington, D.C.: National Academies Press, 2002.
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MLA (9th ed.) Zitazioa
National Research Council (U.S.). Committee on Research Priorities in Geography at the U.S. Geological Survey eta Inc ebrary. Research Opportunities in Geography at the U.S. Geological Survey. National Academies Press, 2002.
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