"It Works How and Why: Twelve Steps and Twelve Traditions of Narcotics Anonymous" is a paperback book written by Narcotics Anonymous. The book provides a comprehensive guide to the 12 steps and 12 traditions of Narco, offering insights on how and why these principles are effective in helping individuals recover from addiction. Published by Narcotics Anonymous World Services, Inc., this book is a valuable resource for those seeking support and guidance in their journey towards achieving and maintaining sobriety. Written in English, this book is a vital tool for anyone looking to understand and follow the principles of Narcotics Anonymous.