Lipschutz,S. <br/><br/>
Discrete mathematics 

 - 2nd ed. 
 - Delhi:  Tata Mcgraw. 
 - 16.29. 
<br/><br/><label>ISBN: </label>0-07-060174-7 
<br/><br/><label>Dewey Class. No.: </label> / LIP