The process and effects of mass communication / 
edited by Wilbur Schramm and Donald F. Roberts. 
 - Rev. ed. 
 - Urbana, Ill. :  University of Illinois Press,  [1971]. 
 - ix, 997 p. :  ill. 
<br/><br/><label>ISBN: </label>0252001974 
<br/><br/><label>LCCN: </label>92010120 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mass media.