Creswell, John W.  <br/><br/>
Research design :   qualitative, quantitative, and mixed methods approaches/ 
John W. Creswell, J. David Creswell 
 - 5th ed. 
 - Thousand Oaks, California :   SAGE Publications, Inc.,   2018 
 - xxv, 275 p. :  ill. ;   26 cm. 
<br/><br/><label>ISBN: </label>1506386709 9781506386706 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research Design.<br/>Social sciences Research Methodology.<br/>Social sciences Statistical methods.
<br/><br/><label>LC Class. No.: </label>H62   / .C6963 2018