Freund, John E. <br/><br/>
Mathematical statistics / 
John E. Freund and Ronald E. Walpole 
 - 3rd ed. 
 - London :  Prentice-Hall International,  1980 
 - 548 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0135620821 
<br/><br/><label>LCCN: </label>79-16146 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical statistics