TY  - BOOK
AU  - Roberson,Cliff
AU  - Birzer,Michael L.
TI  - Introduction to private security: theory meets practice 
SN  - 9780205592401
PY  - 2010///
CY  - Upper Saddle River, NJ
PB  - Prentice Hall
KW  - Private security services
KW  - United States
ER  -