Gaya APA
Siaw, Soen.
(1988).
IBM Personal System
.
:
.
Gaya Chicago
Siaw, Soen.
IBM Personal System
.
:
,
1988.
.
Gaya MLA
Siaw, Soen.
IBM Personal System
.
:
,
1988.
.
Gaya Turabian
Siaw, Soen.
IBM Personal System
.
:
,
1988.
.