Mitchell, Mark L.  . , <br/><br/>
Research design explained /  
Mark L. Mitchell, Janina M. Jolley. 
 - 8th ed. 
<br/><br/><label>ISBN: </label>1133049834 9781133049838 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology --Research --Methodology.<br/>Psychology, Experimental--Research--Methodology.
<br/><br/><label>LC Class. No.: </label>BF76.5   / .M57 2013