Gaya APA
Bakosurtanal, .
(1989).
PC Understanding GIS: the ARC/INFO method
.
Cibinong:
Bakosurtanal.
Gaya MLA
Bakosurtanal, .
"PC Understanding GIS: the ARC/INFO method".
Cibinong:
Bakosurtanal,
1989.
Cetak.