Etter, Gregg books & textbook
Hate Crime and Extremist Gangs
George W. Knox, Ph.D. and Gregg W. Etter Sr. Ed.D. George W. Knox, Ph.D.
New Chicago School Press /2011T Paperback / 365 Pages
isbn-10: 0971053936 / isbn-13: 9780971053939
Gangs and Organized Crime
Knox, George W. Etter, Gregg Smith, Carter F.
Routledge /2018-07-10 Paperback / 512 Pages
isbn-10: 1138614777 / isbn-13: 9781138614772
