Fein, R. A., & Vossekuil, B. (1998). Protective intelligence and threat assessment investigations: A guide for state and local law enforcement officials. US Dep. of Justice, Office of Justice Programs.
Chicago-Zitierstil (17. Ausg.)Fein, Robert A., und Bryan Vossekuil. Protective Intelligence and Threat Assessment Investigations: A Guide for State and Local Law Enforcement Officials. Washington, DC: US Dep. of Justice, Office of Justice Programs, 1998.
MLA-Zitierstil (9. Ausg.)Fein, Robert A., und Bryan Vossekuil. Protective Intelligence and Threat Assessment Investigations: A Guide for State and Local Law Enforcement Officials. US Dep. of Justice, Office of Justice Programs, 1998.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.