National Research Council (U.S.). Space Studies Board & ebrary, Inc. (2011). Space Studies Board annual report: 2010. National Academies Press.
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Dyfyniad Arddull Chicago
National Research Council (U.S.). Space Studies Board and Inc ebrary. Space Studies Board Annual Report: 2010. Washington, D.C.: National Academies Press, 2011.
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Dyfyniad MLA
National Research Council (U.S.). Space Studies Board and Inc ebrary. Space Studies Board Annual Report: 2010. National Academies Press, 2011.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.