Christensen, Larry B. <br/><br/>
Research Methods, Design, and Analysis 

 - 12th  
 - Boston:  Pearson Education,  2015 
 - 542p.:  ill., 23cm 
<br/><br/> Includes Bibliographical References and Index 
<br/><br/><label>ISBN: </label>978-1-292-05774-3 
<br/><br/><label>Dewey Class. No.: </label>001.41