National Academy of Engineering & ebrary, Inc. (2008). Memorial tributes. National Academies Press.
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Dyfyniad Arddull Chicago
National Academy of Engineering and Inc ebrary. Memorial Tributes. Washington: National Academies Press, 2008.
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Dyfyniad MLA
National Academy of Engineering and Inc ebrary. Memorial Tributes. National Academies Press, 2008.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.