MacKinnon, David P <br/><br/>
Introduction to statistical mediation analysis 
David P. MacKinnon 
 - New York  Routledge  2008 
 - x,, 477p +CD  
<br/><br/> Includes bibliographical references and index  
<br/><br/><label>ISBN: </label>9780805864298  
<br/><br/><label>Dewey Class. No.: </label>519.536 MAC