Niven, Ivan,Zuckerman, Herbert S.,Montgomery, Hugh <br/><br/>
An Introduction to the theory of numbers 

 - 5 
 -  John wiley & sons, inc  2004 
<br/><br/><label>ISBN: </label>9971-51-301-3 
<br/><br/><label>Dewey Class. No.: </label>512.7 N 64 I