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>9781452226101 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences---- Research---- Methodology.<br/>Social sciences---- Statistical methods.
<br/><br/><label>LC Class. No.: </label>H62  / .C75 2014