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

 - 2nd ed. 
 - London :  Sage publications,  2003. 
 - xxvi, 246 p.  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780761924425 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences<br/>Methodology<br/>Statistical methods
<br/><br/><label>Dewey Class. No.: </label>300.72 CRE