Conover, W. J. <br/><br/>
Practical nonparametric statistics / 
W. J. Conover 
 - 3rd ed. 
 - New York :  John Wiley,  1999 
 - viii, 584 p. :  ill. ;  24 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0471160687 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nonparametric statistics