Gaya APA
HAIDUK, H, P.
(1991).
Increasing your productivity lotus 1-2-3: release 2.2
.
Leiden:
Gramedia Pustaka Utama.
Gaya MLA
HAIDUK, H., PAUL.
"Increasing your productivity lotus 1-2-3: release 2.2".
Leiden:
Gramedia Pustaka Utama,
1991.
Text.