Books by William S. Pollack:
![[Info]](https://onlinebooks.library.upenn.edu/info.gif)
Pollack, William S.: Threat Assessment in Schools: A Guide to Managing Threatening Situations and to Creating Safe School Climates (Washington: U.S. Secret Service and U.S. Dept. of Education, 2002), also by Robert A. Fein, Brian Vossekuil, Randy Borum, William Modzeleski, and Marisa Reddy (PDF at secretservice.gov)
Find more by William S. Pollack at your library, or elsewhere.