TY  - BOOK
AU  - Dela Cruz,Estelito A.Jr
TI  - Textbook on security and safety management:  principles and practices, a. 2d ed 
SN  - 9780871765
PY  - 2014///
CY  - Mandaluyong CIty 
PB  - National Book Store
KW  - Private security services
KW  -  management
KW  - Security system
ER  -