Prinsip sistem maklumat geografi / 
editor Rolf A. de By ... [et al.]; penterjemah Norkhair Ibrahim, Zulkepli Majid 
 - Skudai, Johor:  Penerbit UTM,  2002 
 - 232 p.:  ill.;  30 cm. 
<br/><br/> Includes glossary and index 
<br/><br/>Bibliography: p. 211-215 
<br/><br/><label>ISBN: </label>9835202753 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geographic information systems