Frankfort-Nachmias, Chava <br/><br/>
Research methodology in the social sciences 

 - 5th ed. 
 - London  Hodder Education  2009 
 - 600 p 
<br/><br/><label>ISBN: </label>9780340662267 
<br/><br/><label>LC Class. No.: </label>H 61 .N25/