Bourbaki, Nicolas <br/><br/>
Elements of mathematics; algebra II   Chapter 4-7 
translated by P. M. Cohn and J. Howie 
 - Berlin  Springer-Verlag  2003 
 - vii, 461p. Bibl. Index. 
 - Elements of Mathematics .
<br/><br/>  
<br/><br/><label>ISBN: </label>3540007067 
<br/><br/><label>Dewey Class. No.: </label>512  / B766.EM