Thomson, A. J. <br/><br/>
A practical english grammar; Exercise 2 
A. J. Thomson and A. V. Martinet. 
 - 2nd ed. 
 - Kuala Lumpur  Oxford University Press  c1980. 
 - 205 p.  22 cm. 
<br/><br/><label>ISBN: </label>0194421236 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English grammar.