Gaya APA
Sudibyono, A, H.
(1990).
Wordstar Professional Release 5.0 - 7.0
.
Yogyakarta:
Andi Offset.
Gaya MLA
Sudibyono, Agustinus, Hanung.
"Wordstar Professional Release 5.0 - 7.0".
Yogyakarta:
Andi Offset,
1990.
Book.