Creswell John W. <br/><br/>
Research design :  Qualitative, Quantitative, and Mixed Methods Approaches. 
by John W. Creswell. 
 - 4th ed.  International student edition 
 - California, Thosand Oaks ;  SAGE ,  2014 . 
 - xxix,273 pages :  Illustration ;  25 cm. 
<br/><br/> Includes a bibliographic reference and an index 
<br/><br/><label>ISBN: </label>9781452274614 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences-Research-Methodology
<br/><br/><label>LC Class. No.: </label>H 62 Cre 2014