William G. Eckert: The Whitechapel murders: The case of Jack the Ripper. In: The American Journal of Forensic Medicine and Pathology. Band2, Nr.1, 1981, ISSN0195-7910, S.53, doi:10.1097/00000433-198103000-00010.
duden.de
Verstümmelung. In: Duden – Deutsches Universalwörterbuch, Bibliographisches Institut & F. A. Brockhaus, Mannheim 2007.
Mark Benecke, Miguel Rodriguez y Rowinski: Luis Alfredo Garavito Cubillos: criminal and legal aspects of serial homicide with over 200 victims. In: Archiv für Kriminologie. Band210, Nr.3–4, 2002, ISSN0003-9225, S.83–94, PMID 12462935.
William G. Eckert: The Whitechapel murders: The case of Jack the Ripper. In: The American Journal of Forensic Medicine and Pathology. Band2, Nr.1, 1981, ISSN0195-7910, S.53, doi:10.1097/00000433-198103000-00010.
Mark Benecke, Miguel Rodriguez y Rowinski: Luis Alfredo Garavito Cubillos: criminal and legal aspects of serial homicide with over 200 victims. In: Archiv für Kriminologie. Band210, Nr.3–4, 2002, ISSN0003-9225, S.83–94, PMID 12462935.