Davison, W. Phillips; Boylan, James  & Yu, Frederick .T.C. <br/><br/>
Mass media systems and effects 

 - 2nd Ed 
 - Holt, New York  1982 
 - x, 264 
<br/><br/><label>ISBN: </label>0-03-052481-4 
<br/><br/><label>Dewey Class. No.: </label>384 Dav