SPSS base system syntax reference guide release 6.0 / 
SPSS Inc.  
 - Chicago :  SPSS,  1993.  
 - ix, 941 p. :  ill. ;  23 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0131793918 9780131793910 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Data processing. <br/>SPSS Base System Reference Guide (Computer program)