The mixed methods reader / 
Vicki L. Plano Clark, John W. Creswell, editors. 
 - Thousand Oaks, Calif. :  Sage Publications,  c2008. 
 - xviii, 616 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9781412951456 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research--Methodology.