Frude, N. <br/><br/>
A guide to SPSS 
N. Frude 
 - 2nd 
 - london  macmilian  1993 
 - xvi,336p. 
<br/><br/><label>ISBN: </label>0333589084 
<br/><br/><label>LC Class. No.: </label>QA76.8.S7.F7 1993