Rosen,K.H. <br/><br/>
Discrete Mathematics and Its Applications  With Combinatorics and Graph Theory 

 - 7. 
 - New Delhi  McGraw Hill  2011 
 - p.843 
<br/><br/><label>ISBN: </label>9780070681880 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Counting<br/>Relations<br/>Graphs
<br/><br/><label>Dewey Class. No.: </label>512 R813D