Spiegel, Murray R <br/><br/>
Theory & problems of statistics 

 - 2nd ed 
 - McGraw-Hill Publishing Company, New York  1988 
 - 504 
<br/><br/><label>ISBN: </label>0-07-060234-4 
<br/><br/><label>Dewey Class. No.: </label>311 Spi