Roman Steven. <br/><br/>
Introduction to discrete mathematics  

 - 2nd edition. 
 - Delhi :  Harcourt Brace Pub,  2007 
 - 469. 
<br/><br/><label>ISBN: </label>0155617304 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>510  / ROM