• California Association of Hostage Negotiators
• Canadian Critical Incident Association
• Confronting the Terrorist Hostage Taker
• Crisis Inc.
• Enforcement Technology Group, Inc.
• FBI - Critical Incident Response Group
• Florida Association of Hostage Negotiators
• Florida Hostage Negotiators OneList
• Frank A. Bolz Associates
• Hostage Negotiation Research
• Hostagenegotiation.com
• Illinois Crisis Negotiators Association
• International Journal of Police Negotiations and Crisis Management
• Metropolitan Area Crisis Negotiators
• National Council of Negotiation Associations
• Negotiator Telephone System
• New Jersey Area Crisis Negotiators
• Oklahoma Crisis Negotiators Email Link
• Phone Finder
• Police Negotiaton Sites
• Rescue Phone
• South Carolina Crisis Negotiators
• Texas Association of Hostage Negotiators
• The Terrorism Research Center
• Western States Hostage Negotiators Association
  

• AELE Law Enforcement Legal Center
• Aurora Police Association
• Calibre Press
• Critical Incident Management Agency
• Colorado Law Enforcement Officer's Association
• Colorado Springs Police Department
• Colorado Police Protective Association
• Colorado Revised Statutes
• FBI
• IACP
• Officer.com
• Policeguide.com
• Policeone.com
  

• Institute for Intergovernmental Reserach
• Law Enforcement Training Network
• Pearson-Radli and Associates. Inc.
• Profesional Law Enforcement Seminars
• Public Agency Training Council
• TEEX Law Enforcement and Security Training
• John Reid & Associates