Creswell, John W. <br/><br/>
Research design:   Qualitative, quantitative, & mixed methods approaches/ 
By John W. Creswell. 
 - Fourth edition. 
 - Los Angeles:  Sage,  2014. 
 - 273 p.: 
<br/><br/><label>ISBN: </label>9781452274614 
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>LC Class. No.: </label>H 62  /  CRE 2014