Creswell, John W. <br/><br/>
Research design  qualitative, quantitative and mixed methods approaches 

 - 3rd. 
 - Los Angeles  Sage  2009 
 - xxix, 260p.  26cm. 
<br/><br/><label>ISBN: </label>9781412965576 
<br/><br/><label>Subjects--Topical Terms: </label><br/>RESEARCH METHODS<br/>SOCIAL RESEARCH
<br/><br/><label>Dewey Class. No.: </label>300.72  / CRE