George, Darren <br/><br/>
IBM SPSS statistics 19 step by step : a simple guide and reference 

 - 12th ed. 
 - Boston  Pearson  2012 
 - 406 p 
<br/><br/><label>ISBN: </label>9780205255887 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Boston
<br/><br/><label>LC Class. No.: </label>HA 32 .G458/