Norusis,J.Marija. <br/><br/>
SPSS-X Introductory statistics guide :  for spss-x release. 

 - ed. 
 - chicago :  spss inc,  1988. 
 - 370  p. ;    cm. 
<br/><br/>index. 
<br/><br/><label>ISBN: </label> $ 
<br/><br/><label>Subjects--Topical Terms: </label><br/>statistics.