Freedman, David. <br/><br/>
Statistics / 
David Freedman, Robert Pisani, Roger Purves. 
 - 4th  ed. 
 - New Delhi :  Viva Books,  2009. 
 - 1 v. (various pagings) ; 
<br/><br/><label>ISBN: </label>8130915876 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical statistics.