The practice of social research 
Thomson Wadsworth. 
 - 11th edition. 
 -  2007 
 - xxiv, 511 pages 
<br/><br/>
<br/><br/><label>ISBN: </label>0-495-09325-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences -- Methodology.
<br/><br/><label>Dewey Class. No.: </label>GS 300.72 B11p 2007