COMMUNICATIONS IN LAW ENFORCEMENT/ 
Turpin,Silvana. 
 - 2nd edition. 
 - Ontario,Canada,:  Prentice-Hall,  c2002. 
 - vii,168 p.:  ill.;  24 cm. 
<br/><br/><label>ISBN: </label>0130909068 
<br/><br/><label>LC Class. No.: </label>HV7936  / .T87 2002