Creswell, John W. <br/><br/>
Research design :  qualitative, quantitative, and mixed method approaches/ 
by John W. Creswell 
 - 4th edition 
 - London  SAGE  c2014 
 - xxix,273p.  ill. 
<br/><br/> Includes subject index  
<br/><br/><label>ISBN: </label>9781452274614 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research--Methodology<br/>Social sciences--Statistical methods
<br/><br/><label>Dewey Class. No.: </label>300.721