David M. Burton <br/><br/>
Elementary number theory 

 - 7th ed. 
 - Chennai  McGraw Hill  2018 
 - xii, 436p.  23x15cm. 
<br/><br/><label>ISBN: </label>9781259025761  715 
<br/><br/><label>Dewey Class. No.: </label>512.7  / BUR/ELE