Gaya APA
SIMARMATA, J.
(2006).
Pengamanan Sistem Komputer
(
1st ed)
.
Yogyakarta:
Andi.
Gaya MLA
SIMARMATA, Janner.
"Pengamanan Sistem Komputer".
1st ed
Yogyakarta:
Andi,
2006.
Printed.