Creswell, John W. <br/><br/>
Designing and conducting mixed methods research 

 - 2nd ed. 
 - Los Angeles; London :  SAGE  c2011 
 - xxvi, 457 p. : ill. ; 24 cm. (pbk) 
<br/><br/><label>ISBN: </label>1412975174 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research