Alexander, L. G. <br/><br/>
Longman advanced grammar : reference and practice 

 - New York  Longman  1993 
 - 304 p. 
<br/><br/><label>ISBN: </label>05820797780 
<br/><br/><label>Subjects--Topical Terms: </label><br/>GRAMATICA<br/>LENGUA INGLESA<br/>INGLATERRA