A textbook on security and safety management : principle & practices 
Dela Cruz, Estelito, Jr. 
 - 2nd ed. 
 -  National Book Store,  2014 
 - xx, 410 p. 
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<br/><br/><label>ISBN: </label>9-71087176-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Private security services -- Management.
<br/><br/><label>Dewey Class. No.: </label>F 363.289 D3312 2014