Abstract algebra  
Dummit, David Steven. 
 - 2nd ed. 
 - Upper Saddle River, N.J. :  Prentice Hall,  1999 
 - xiv, 898 p. :  ill. ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0135693020 | 9788126517763