Gaya APA
Haiduk, H, P., Ross, P, W.
(1991).
Increasing your productivity with Lotus 1-2-3
.
Illinois:
Glencoe.
Gaya MLA
Haiduk, H., Paul., Ross, Paul, W..
"Increasing your productivity with Lotus 1-2-3".
Illinois:
Glencoe,
1991.
Text.