1. Killer's ultimate selfie: Roanoke horror becoming the new norm;Achenbach,2015
2. Goal achievement and delinquency;Agnew;Sociology and Social Research,1984
3. Newly released documents include online rants by Giffords gunman;Associated Press,2014
4. Should mass shooters be identified? ‘Don't name them’ movement growing;Baddour,2015
5. Teenagers want successful careers and global travel, expect to delay marriage and parenting.;Barna,2010