DOUGLAS & Olshaker, M. (1997). Journey into darkness: Follow the PBI'S premier investigative profiler as he penetrates the minds and motives of the most terryfying serial killers. Scribner.
Chicago Style (17th ed.) CitationDOUGLAS and Mark Olshaker. Journey into Darkness: Follow the PBI'S Premier Investigative Profiler as He Penetrates the Minds and Motives of the Most Terryfying Serial Killers. New York: Scribner, 1997.
MLA (9th ed.) CitationDOUGLAS and Mark Olshaker. Journey into Darkness: Follow the PBI'S Premier Investigative Profiler as He Penetrates the Minds and Motives of the Most Terryfying Serial Killers. Scribner, 1997.
Warning: These citations may not always be 100% accurate.