Murphy, Raymond <br/><br/>
English grammar in use: a selfstudy reference and practice book for intermediate students: with answers. 

 - Cambridge :  Cambridge University press,  1994. 
 - x, 350 p. :  il.  ;  24,5 cm. 
<br/><br/> Apéndices: p.274-283 
<br/><br/><label>ISBN: </label>052143680X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>INGLES -GRAMATICA -ENSEÑANZA PROGRAMADA