Grey literature is one term for materials and research produced by organizations or people outside the traditional commercial/journalistic or academic publishing worlds. Common forms of grey literature include government reports, research reports produced by organizations, conference proceedings, and white papers. Grey literature is generally written by and for professionals in a field, and typically employs technical and formal language. It is typically reviewed by a professional editor before its release and often includes references.
In criminal justice, some gray literature can be found using ONE Search. Look for Source Types: Reports, Trade Publications, & Conference Materials. Other gray literature can be found online. The Rutgers School of Law Gray Literature Database has an extensive collection of all types of gray literature relating to criminal justice.