James A. Densley & Robert McLean 
Robbery in the Illegal Drugs Trade [PDF ebook] 
Violence and Vengeance

Robbery can be planned or spontaneous and is a typically short, chaotic crime that is comparatively under-researched. This book transports the reader to the streets and focuses on the real-life narratives and motivations of the youth gang members and adult organized criminals immersed in this form of violence. Uniquely focusing on robberies involving drug dealers and users, this book considers the material and emotional gains and losses to offenders and victims, and offers policy recommendations to reduce occurrences of this common crime.