John Whiteclay Chambers II. "Nunn, Sam." The Oxford Companion to American Military History. Oxford University Press. 2000. Encyclopedia.com. 23 Dec. 2009 <http://www.encyclopedia.com>.
John Whiteclay Chambers II. "Nunn, Sam." The Oxford Companion to American Military History. Oxford University Press. 2000. Encyclopedia.com. (December 23, 2009). http://www.encyclopedia.com/doc/1O126-NunnSam.html
John Whiteclay Chambers II. "Nunn, Sam." The Oxford Companion to American Military History. Oxford University Press. 2000. Retrieved December 23, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O126-NunnSam.html