National Academy of Engineering. (2014). Memorial tributes. National Academies Press.
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Dyfyniad Arddull Chicago
National Academy of Engineering. Memorial Tributes. Washington, District of Columbia: National Academies Press, 2014.
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Dyfyniad MLA
National Academy of Engineering. Memorial Tributes. National Academies Press, 2014.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.