Edwards, Allen L. <br/><br/>
Experimental design in psychological research 

 - Rev. ed. 
 - New York :  Rinehart,  1960 
 - 398 p. :  ill. ;  24 cm. 
<br/><br/><label>LCCN: </label>60-006489 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology<br/>Experimental design