Anita Belles Porterfield, John Porterfield: Death on Base: The Fort Hood Massacre. University of North Texas Press, Denton 2015, ISBN 978-1-57441-596-4, S. 20.
Originalzitat: “All women of Killeen and Belton are vipers! This is what you've done to me and my family! This is what Belton did to me! Is it worth it? This is payback day!” In: Carol Dawson, Carol Johnston: House of Plenty: The Rise, Fall, and Revival of Luby’s Cafeterias. University of Texas Press, Austin 2006, ISBN 978-0-292-70656-9, S. 176 f.
Originalzitat: “Please give me the satisfaction of some day laughing in the face of all those mostly white treacherous female vipers from those two towns [Killeen and Belton] who tried to destroy me and my family.” In: James Alan Fox, Jack Levin: Extreme Killing: Understanding Serial and Mass Murder. 3. Auflage. SAGE Publications, Thousand Oaks 2015, ISBN 978-1-4833-5072-1, S. 251.
James Alan Fox, Jack Levin: Extreme Killing: Understanding Serial and Mass Murder. 3. Auflage. SAGE Publications, Thousand Oaks 2015, ISBN 978-1-4833-5072-1, S. 251 f.
James Alan Fox, Jack Levin: Overkill. Mass Murder and Serial Killing Exposed. Springer US, Boston 1994, ISBN 978-0-306-44771-6, S. 211.
Michael D. Kelleher: New Arenas for Violence: Homicide in the American Workplace. Praeger, Westport 1996, ISBN 978-0-275-95652-3, S. 79.
Katherine M. Ramsland: Inside the Minds of Mass Murderers: Why They Kill. Praeger, Westport 2005, ISBN 978-0-275-98475-5, S. 46.
Ronald B. Flowers, H. Loraine Flowers: Murders in the United States: Crimes, Killers and Victims of the Twentieth Century. McFarland & Company, Jefferson 2004, ISBN 978-0-7864-2075-9, S. 80.
