Verba, Sidney, <br/><br/>
Participation in America :  political democracy and social equality / 
by Sidney Verba and Norman H. Nie. 
 - New York :  Harper & Row,  1972. 
 - xxiii, 428 pages :    illustration ;    25 cm. 
<br/><br/><label>ISBN: </label>0060468238 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Political participation--United States.