Johnsonbaugh, Richard. <br/><br/>
Discrete mathematics / 
Richard Johnsonbaugh. 
 - 4th ed. 
 - London :  Prentice-Hall,  1997. 
 - xiv, 701 p. :  ill. col. ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0135711916 (pbk. ) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer science--Mathematics.