Hedderson, John. <br/><br/>
SPSSX made simple / 
John Hedderson. 
 - Belmont, Ca. :  Wadsworth Publishing Co.,  1987. 
 - 253 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0534074588 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SPSS X (Computer System).<br/>Social sciences--Data processing.