Creswell, John W. <br/><br/>
Educational research:  planning, conducting, and evaluating quantitative and qualitative research/ 
John W. Creswell 
 - 4th ed. 
 - United State :  Pearson Education ,  2012 
 - xxii, 650 p. :  ill. ;  25 cm 
<br/><br/><label>ISBN: </label>9780132613941 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational-Research
<br/><br/><label>LC Class. No.: </label>LB 1028  / .C92 2012