Katz, E <br/><br/>
Personal influence: The part played by people in the flow of mass communications 

 - London  Routledge  1955 
 - xxxiv, 400p. 
<br/><br/><label>ISBN: </label>9781412805070 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mass media<br/>Mass media