Creswell, John W. <br/><br/>
Research design :  Qualitative, quantitative and mixed methods approaches / 
John W. Creswell and J. David Creswell 
 - 5th ed. 
 - Los Angeles  Sage publications  2018 
 - 275 p. : ill. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>9781506386768 
<br/><br/><label>Subjects--Topical Terms: </label>--Research methodology--Statistical methods
<br/><br/><label>LC Class. No.: </label>H62  / .C74 2018