Wimmer, Roger D. <br/><br/>
Mass media research  an introduction 
Roger D. Wimmer, Joseph R. Dominick. 
 - 9th ed. 
 - Boston, Mass.  Cengage- Wadsworth  c2011. 
 - xii, 464 p.  ill. (some col.)  24 cm. 
 - Wadsworth series in mass communication and journalism .
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9781439082744 (pbk.) 
<br/><br/><label>LCCN: </label>2009936675 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mass media--Research.
<br/><br/><label>LC Class. No.: </label>P91.3  / .W47 2011