Rosen, kenneth H <br/><br/>
Discrete Mathematics and Its Applications 

 - 6th ed. 
 - New Delhi  Tata McGraw Hill  2010 
 - p.787 
<br/><br/><label>ISBN: </label>9780070648241 
<br/><br/><label>Subjects--Topical Terms: </label> Induction and Recursion  Counting  Relations  Graphs 
<br/><br/><label>Dewey Class. No.: </label>512 R86D