An introduction to probability theory and its applications / 
Feller William . 
 - 3rd ed.  vol 1 
 - New Delhi ;  John Wiley & Sons, Inc.  1968. 
 - xviii,509 p,: 
<br/><br/><label>ISBN: </label>9788126518050 
<br/><br/><label>LC Class. No.: </label>QA273.2  / .F4 1968 Vol 1