National Research Council (U.S.) Committee on Research Priorities in Geography at the U.S. Geological Survey. (2002). Research opportunities in geography at the U.S. Geological Survey. National Academies Press.
Chicago-Zitierstil (17. Ausg.)National Research Council (U.S.) Committee on Research Priorities in Geography at the U.S. Geological Survey. Research Opportunities in Geography at the U.S. Geological Survey. Washington, D.C: National Academies Press, 2002.
MLA-Zitierstil (9. Ausg.)National Research Council (U.S.) Committee on Research Priorities in Geography at the U.S. Geological Survey. Research Opportunities in Geography at the U.S. Geological Survey. National Academies Press, 2002.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.