David Freedman, Robert Pisani, Roger Purves. <br/><br/>
Statistics / 
David Freedman, Robert Pisani, Roger Purves. 
 - 3rd Edition 
 - London:  W. W. Norton & Company,  1997. 
 - 710 p ;  31.00 cm 
<br/><br/> Paperback 
<br/><br/><label>Dewey Class. No.: </label>519.5  / FRE