Buku pintar IELTS / 
penyunting, Purwaningsih. 
 - Jogjakarta :  Penerbit B First,  2011. 
 - 189 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>9786028864282  RM30.40 
<br/><br/><label>Subjects--Topical Terms: </label><br/>International English Language Testing System.<br/>English language--Textbooks for foreign speakers.<br/>English language--Examinations--Study guides