Creswell, John W. <br/><br/>
Research design :  qualitative, quantitative, and mixed methods approaches / 
John W. Creswell. 
 - 3rd ed. 
 - Thousand Oaks :  Sage Publications,  c2009. 
 - xxix, 260 p. 
<br/><br/>Bibliogr.: p. 237-245. 
<br/><br/><label>ISBN: </label>9781412965569 (cloth) 141296556X (cloth) 9781412965576 (pbk.) 1412965578 (pbk.) 
<br/><br/><label>LCCN: </label>2008006242 
<br/><br/><label>LC Class. No.: </label>H62  / .C6963 2009 
<br/><br/><label>Dewey Class. No.: </label>300.72