Mitchell, Mark L.  <br/><br/>
Research design explained/ 
Mark L. Mitchell  
 - 6th ed.  
 - USA :  Thomson Higher Education,    c2007. 
 - xxiv, 611 p.   : ill.   ; 23 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0-495-09362-9. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology-Research-Methodology.
<br/><br/><label>Dewey Class. No.: </label>Circ. 150.7 M682r 2007