Karen M. Hess. <br/><br/>
Police operation :  theory and practice / 
Hess, Karen M. 
 - 3rd ed. 
 - xvi, 527 p. ;  24 cm. 
<br/><br/> Includes glossary and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Police functions.<br/>Law enforcement--United States.