Quantitative research methods for communication:  a hands on approach/ 
Jason S. Wrench ...[et.al] 
 - Oxford:  Oxford University Press,  2008 
 - xi,537p. :   ill. ;  20cm. 
<br/><br/> Includes index 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>9780195337471(pbk) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communication research