Downing, Angela <br/><br/>
English grammar :  a university course / 
Angela Downing and Philip Locke 
 - 2nd ed. 
 - London :  Routledge,  2006 
 - xxii, 610 p. :  ill. ;  25 cm. 
<br/><br/>Select bibliography : p. [591]-595 
<br/><br/><label>ISBN: </label>0415287863  RM421.20 9780415287876 (pbk) 9780415287869 (hbk) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Grammar--Problems, exercises, etc.<br/>English language--Textbook for foreign speakers