Book excerpt: In Gangs and Organized Crime, George W. Knox, Gregg W. Etter, and Carter F. Smith offer an informed and carefully investigated examination of gangs and organized crime groups, covering street gangs, prison gangs, outlaw motorcycle gangs, and organized crime groups from every continent. The authors have spent decades investigating gangs as well as researching their history and activities, and this dual professional-academic perspective informs their analysis of gangs and crime groups. They take a multidisciplinary approach that combines criminal justice, public policy and administration, law, organizational behavior, sociology, psychology, and urban planning perspectives to provide insight into the actions and interactions of a variety of groups and their members. This textbook is ideal for criminal justice and sociology courses on gangs as well as related course topics like gang behavior, gang crime and the inner city, organized crime families, and transnational criminal groups. Gangs and Organized Crime is also an excellent addition to the professional’s reference library or primer for the general reader. More information is available at the supporting website – www.gangsandorganizedcrime.com