Creswell, John W. <br/><br/>
Research design :  qualitative, quantitative, and mixed methods ap proaches / 
by 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 index. 
<br/><br/><label>ISBN: </label>9781452226095 (cloth) 9781452226101 (pbk.) 
<br/><br/><label>LCCN: </label>2012-043521 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences-- Research<br/>Social sciences-- Statistical methods.
<br/><br/><label>Dewey Class. No.: </label>300.72/1