1. Federal Hate Crime Charges Likely After South Carolina Church Shooting;Apuzzo;New York Times,2015
2. Radicalization: Behind Bars and Beyond Borders;Cilluffo;Brown Journal of World Affairs,2006
3. Federal Bureau of Investigation What We Investigate: Terrorism https://www.fbi.gov/about-us/investigate/terrorism/terrorism-definition
4. The Radicalisation of Prison Inmates: Exploring Recruitment, Religion and Prisoner Vulnerability;Mulcahy;Journal of Human Security,2013