Severin, Werner J. <br/><br/>
Communication theories :  origin, methods, and users in the mass media / 
Werner J. Severin. 
 - 4th ed. 
 - New York :  Longman,  c1997. 
 - xiv, 424 p. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0801317037 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communication.<br/>Mass media.
<br/><br/><label>LC Class. No.: </label>P90  / .S4414