Gaya APA
PUTRAJAYA, I.
(1994).
Operating System & Utility MS DOS Version 6.20
(
1)
.
Yogyakarta:
Andi.
Gaya MLA
PUTRAJAYA, ICHWANI.
"Operating System & Utility MS DOS Version 6.20".
1
Yogyakarta:
Andi,
1994.
Text.