Salkind, Neil J Ed. <br/><br/>
Encyclopedia of research design : 3Vols 

 - London  Sage  2010 
 - xi, 1719p.  HB  28cm. 
<br/><br/><label>ISBN: </label>9781412961271 
<br/><br/><label>Dewey Class. No.: </label>001.403  / ENC