Christensen,Larry B. <br/><br/>
Experimental Methology / 
Larry B. Christensen 
 - Third Edition 
 - London :  Allyn and Bacon,Inc  1985.1980.1977. 
 - 359 Pages :  pbk.  24 cm. 
<br/><br/> Includes Index. 
<br/><br/><label>ISBN: </label>0-205-08244-0