Creswell, John W.  <br/><br/>
Research design:  qualitative, quantitative, and mixed methods approaches/ 
John W. Creswell 
 - 4th ed. 
 - Los Angeles:  SAGE,  2014 
 - xxix, 271p. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9781452274614 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research
<br/><br/><label>LC Class. No.: </label>H 62 CRE 2014