Willis, Roger <br/><br/>
Oxford progressive English for South-East Asia student's book 1 

 - Kuala Lumpur :  Oxford Univ. Press,  1974 
 - 92 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ENGLISH LANGUAGE
<br/><br/><label>LC Class. No.: </label>PE1128  / W544O