SPSS-X user's guide. 

 - Chicago, Ill.:  SPSS,  1988. 
 - 1072 p. :  col. ill.,  28cm. 
<br/><br/><label>ISBN: </label>0918469511 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>SPSS (Computer file).
<br/><br/><label>Subjects--Topical Terms: </label><br/> Social sciences--Data processing.