Gaya APA
STAMPER, D, A.
(1991).
Business Data Communications 3ed
(
3)
.
Redwood:
The Benyamin Cummings.
Gaya MLA
STAMPER, David, A.
"Business Data Communications 3ed".
3
Redwood:
The Benyamin Cummings,
1991.
Printed.