Lam, T.Y. <br/><br/>
Exercises in modules and rings 
/ T.Y. Lam 
. - New York  : Springer, 2007
. - 412 p.  ; 24 cm 
 - Problem books in mathematics .
<br/><br/><label>ISBN: </label>10 : 0-387-98850-5 
<br/><br/><label>Universal Decimal Class. No.: </label>519.4