Everything on the Line: Calming & De-escalation of Aggressive & Mentally Ill Individuals on the Phone: A Comprehensive Guidebook for Emergency Dispatc - Hardcover

Words of Power: A Guide for Ordinary People to Calm and De-Escalate Aggressive Individuals: Special Edition - Paperback

Words of Power: A Guide for Ordinary People to Calm and De-Escalate Aggressive Individuals - Paperback

The Thin Blue Lifeline: Verbal De-escalation of Aggressive & Emotionally Disturbed People: A Comprehensive Guidebook for Law Enforcement Officers - Hardcover