Silverman, Joseph H. <br/><br/>
A friendly introduction to number theory / 
Joseph H. Silverman 
 - 4th ed., international ed. 
 - Boston :  Pearson/Prentice Hall,  2011 
 - 409 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780321782366 (pbk.) 0321782364 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Number theory--Textbooks