Pamela Collins & Clifford Van Meter 
Principles of Security and Crime Prevention [PDF ebook] 

This introductory text provides a thorough overview of the private security system. This edition includes crime prevention and its zones of protection — the theoretical framework that provides the bridge between private and public sector law enforcement. From the historical development and the professional nature of security and crime prevention to the legal aspects of private security, this well-rounded text covers basic elements of security and crime prevention.