Gaya APA
ArcGIS 9 : What is ArcGIS 9.1?. (2005).
USA:
ESRI.
Gaya Chicago
ArcGIS 9 : What is ArcGIS 9.1?.
.
USA:
ESRI,
2005.
Text.
Gaya MLA
ArcGIS 9 : What is ArcGIS 9.1?.
.
USA:
ESRI,
2005.
Text.
Gaya Turabian
ArcGIS 9 : What is ArcGIS 9.1?.
USA:
ESRI,
2005.
Print.