Sains rumpai / 
Ismail Sahid. 
 - Kuala Lumpur:  Dewan Bahasa dan Pustaka,  1989. 
 - 241 p. ;  24 cm. 
<br/><br/><label>ISBN: </label>983620699X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics--Study and teaching--Malaysia.<br/>Teaching.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Malaysia--Economics--Study and teaching.