SHAUGHNESSY, J.J <br/><br/>
RESEARCH METHODS IN PSYCHOLOGY  

 - 2ND Ed. 
 - NEW YORK :  McGRAW-HILL,  1985. 
<br/><br/><label>ISBN: </label>0070728593 
<br/><br/><label>Dewey Class. No.: </label>150.072 SHA