Creswell, John W <br/><br/>
Designing and conducting mixed methods research  / 
John W. Creswell, Vicki I. Plano Clark 
 - London :  Sage Publications, Inc ,  c2007 
 - xvii, 275p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references and index.r 
<br/><br/><label>ISBN: </label>1412927927 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research--Methodology<br/>Research--Evaluation