De Vaus David <br/><br/>
Research Design in social Research 

 - London  SAGE  2001 
 - xvii,279p. 
<br/><br/><label>ISBN: </label>9780761953470 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social Siences-research methodology
<br/><br/><label>LC Class. No.: </label>H 61  / .D3375