Walker, Samuel <br/><br/>
The police in America :  an introduction / 
Samuel Walker. 
 - 2nd ed. 
 - New York ;  London :  McGraw-Hill,  c1992. 
 - xxii, 412p. :  ill. ;  24 cm. 
<br/><br/> Includes index.  Previous ed.: 1983. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Police--United States.<br/>Police administration--United States.
<br/><br/><label>Subjects--Index Terms: </label>Cảnh sát Hợp chủng quốc Hoa Kỳ Mỹ 
<br/><br/><label>Dewey Class. No.: </label>363.2  / WAL 1992