A concrete introduction to higher algebra  
Childs, Lindsay. 
 - 3rd ed. 
 - New York :  Springer,  2009 
 - xiv, 603 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>9780387745275 (acidfree paper) | 9780387747255 (ebk.)