↑ "These would be the first of many probes into what soon became known as the Kent State Massacre. Like the Boston Massacre almost exactly two hundred years before (March 5, 1770), which it resembled, it was called a massacre not for the number of its victims, but for the wanton manner in which they were shot down." Philip Caputo (May 4, 2005). "The Kent State Shootings, 35 Years Later". NPR. สืบค้นเมื่อ November 9, 2007.
↑ Shots Still Reverberate For Survivors Of Kent State 'Dean Kahler, who was paralyzed during the shootings, went on to become a high school teacher and covered the events of May 4 in his classes' NPR News, May 3, 2010. Retrieved January 20, 2014.
