_Methods in Behavioral research  

 - 10th ed.  
 - U S A Mcgraw Hill 2009  
 - includes index  
<br/><br/> _scientific research  
<br/><br/><label>ISBN: </label>9.780071281e+012 
<br/><br/><label>LC Class. No.: </label>BF76.5.C67 2009