1. Foundation for a general strain theory of crime and delinquency;Agnew;Criminology,1992
2. A general strain theory of terrorism;Agnew;Theoretical Criminology,2010
3. Andrew Gumbel 1998 The riddle of Aldo Moro: Was Italy's establishment happy to see him die? The Independent http://www.independent.co.uk/news/the-riddle-of-aldo-moro-was-italys-establishment-happy-to-see-him-die-1149073.html
4. Assassinations;Appleton;Public Opinion Quarterly,2000