National Academy of Engineering & ebrary, Inc. (2011). Memorial tributes. National Academies Press.
芝加哥风格引文National Academy of Engineering 与 Inc ebrary. Memorial Tributes. Washington: National Academies Press, 2011.
MLA引文National Academy of Engineering 与 Inc ebrary. Memorial Tributes. National Academies Press, 2011.
警告：这些引文格式不一定是100％准确.