Murphy, Raymond <br/><br/>
Essential grammar in use :  a self-study reference and practice book for elementary students of English, with answers / 
Raymond Murphy. 
 - Third edition 
 - Cambridge :  Cambridge University Press,  2009, c2007. 
 - 319 p. ;  il. col. ;  26 cm. 
<br/><br/>Incluye índice (pp. 315-319). 
<br/><br/><br/>Inglés 
<br/><br/><label>ISBN: </label>9780521675802 
<br/><br/><label>Dewey Class. No.: </label>425