SPSS X user's guide / 
SPSS Inc. 
 - 3rd ed. 
 - Chicago :  SPSS,  c1988. 
 - 1072 p. :  ill. ;  28 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0918469511 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SPSS X (Computer system)<br/>Social Sciences--Data processing.