Collins Cobuild key words for IELTS. 
 Key words for IELTS. 

 - Glasgow :  HarperCollins Publishers,  2011. 
 - 2 v. :  ill. ;  20 cm. 
<br/><br/> The starter -  Improver.  book 1.  book 2. 
<br/><br/><label>ISBN: </label>9780007365456 (pbk. : book 1)  RM39.10 9780007365463 (pbk. : book 2)  RM39.10 
<br/><br/><label>Subjects--Topical Terms: </label><br/>International English Language Testing System--Study guides.<br/>English language--Textbooks for foreign speakers.