Benjamin, Jack R. Cornell, C. Allin <br/><br/>
Probability, Statistics, and Decision for Civil Engineers 

 - New York  McGraw-Hill Book Company  1970 
 - p.148 
<br/><br/><label>ISBN: </label>0070045526 
<br/><br/><label>Dewey Class. No.: </label>519.5 B45P