Langman PhD, Peter books & textbook
Why Kids Kill: Inside the Minds of School Shooters
St. Martin's Griffin /2010-08-03 Paperback / 256 Pages
isbn-10: 0230101488 / isbn-13: 9780230101487
Warning Signs: Identifying School Shooters Before They Strike
Peter Langman PhD Asa Siegel Tantor Audio
Tantor Audio /2022-12-20 Audible Audiobook
