Gaya APA
Weitzen, H, S.
(1991).
Infopreneurs : turning data into dollars
(
2nd ed.)
.
New York:
John Wiley.
Gaya MLA
Weitzen, H., Skip.
"Infopreneurs : turning data into dollars".
2nd ed.
New York:
John Wiley,
1991.
Buku/Printed Material.