Creswell, John W <br/><br/>
Research design :  qualitative, quantitative, and mixed methods approaches / 
John W. Creswell 
 - 4th ed 
 - Thousand Oaks :  SAGE Publications,  c2014. 
 - xxix, 273 p. :  ill. ;  26 cm 
<br/><br/>Includes bibliographical references (p. 251-260) and indexes 
<br/><br/><label>ISBN: </label>9781452226095 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Methodology--Methodology<br/>Social sciences--Statistical methods
<br/><br/><label>LC Class. No.: </label>H62  / C923 2014