Creswell, John W. <br/><br/>
Research design: qualitative, quantitative, and mixed methods approaches 
John W. Creswell 
 - 3rd ed. 
 - London:  SAGE Publication,  2009 
 - xxix,260p.  : ill.  ; 23cm. 
<br/><br/>Include bibliographical references and index. 
<br/><br/><label>ISBN: </label>978-1-4129-6557-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social science-Research-Methodology.<br/>Social sciences-Statistical methods.
<br/><br/><label>LC Class. No.: </label>H62.C6963