Wimmer, Roger . <br/><br/>
Mass media research  An introduction 

 - 4th ed 
 - Belmont  Wadsworth Publishing Company  1994 
 - 497  Hb 
<br/><br/><label>ISBN: </label>0-534-17472-8 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>302.23