• Bartels, Lynn, and Carla Crowder. “Fatal Friendship: How Two Suburban Boys Traded Baseball and Bowling for Murder and Madness.”
• Briggs, Bill, and Jason Blevins. “A Boy with Many Sides.”
• Brooks, David. “Columbine: Parents of a Killer.”
• Emery, Erin, Steve Lipsher, and Ricky Young. “Video, Poems Foreshadowed Day of Disaster.”
• Gibbs, Nancy, and Timothy Roche. “The Columbine Tapes.”
• Johnson, Dirk, and Jodi Wilgoren. “The Gunman: A Portrait of Two Killers at War with Themselves.”
• Johnson, Kevin, and Larry Copeland. “Long-Simmering Feud May Have Triggered Massacre.”
• Kurtz, Holly. “Klebold Paper Foretold Deadly Rampage.”
• Lowe, Peggy. “Facts Clarify but Can’t Justify Killers’ Acts.”
• Prendergast, Alan. “Doom Rules: Much of What We Know About Columbine Is Wrong.”
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• Russakoff, Dale, Amy Goldstein, and Joel Achenbach. “Shooters’ Neighbors Had Little Hint.”
• Simpson, Kevin, and Jason Blevins. “Mystery How Team Players Became Loners.”
• Simpson, Kevin, Patricia Callahan, and Peggy Lowe. “Life and Death of a Follower.”
• Wilgoren, Jodi, and Dirk Johnson. “The Suspects: Sketch of Killers; Contradictions and Confusion.”
• Babiak, Paul, and Robert D. Hare.
• Barry, Tammy D., Christopher T. Barry, Annie M. Deming, and John E. Lochman. “Stability of Psychopathic Characteristics in Childhood: The Influence of Social Relationships.” SAGE Publications, Thousand Oaks, CA.
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• Hart, Stephen, David N. Cox, and Robert D. Hare.
• Kiehl, K. “Limbic Abnormalities in Affective Processing by Criminal Psychopaths as Revealed by Functional Magnetic Resonance Imaging.”
• Kiehl, Kent A., Alan T. Bates, Kristin R. Laurens, Robert D. Hare, and Peter F. Liddle. “Brain Potentials Implicate Temporal Lobe Abnormalities in Criminal Psychopaths.”
• Kiehl, Kent A., Andra M. Smith, Adrianna Mendrek, Bruce B. Forster, Robert D. Hare, and Peter F. Liddle. “Temporal Lobe Abnormalities in Semantic Processing by Criminal Psychopaths as Revealed by Functional Magnetic Resonance Imaging.”