John (HSM Training and Consultancy, London, UK) Buckley 
Managing Intelligence [PDF ebook] 
A Guide for Law Enforcement Professionals

Managing Intelligence: A Guide for Law Enforcement Professionals is designed to assist practitioners and agencies build an efficient system to gather and manage intelligence effectively and lawfully in line with the principles of intelligence-led policing. Research for this book draws from discussions with hundreds of officers in different agencies, roles, and ranks from the UK, United States, Australia, New Zealand, and Canada. Highlighting common misunderstandings in law enforcement about intelligence, the book discusses the origins of these misunderstandings and puts intelligence in context with other policing models.