Douglas, J. E. (1997). Journey into darkness: Follow the FBI's premier investigative profiler as he penetrates the minds and motives of the most terrifying serial killers. Scribner.
Chicago-Zitierstil (17. Ausg.)Douglas, John E. Journey into Darkness: Follow the FBI's Premier Investigative Profiler as He Penetrates the Minds and Motives of the Most Terrifying Serial Killers. New York, NY: Scribner, 1997.
MLA-Zitierstil (8. Ausg.)Douglas, John E. Journey into Darkness: Follow the FBI's Premier Investigative Profiler as He Penetrates the Minds and Motives of the Most Terrifying Serial Killers. Scribner, 1997.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.