Gaya APA
Computers and information systems. (2008).
Chicago:
URWIN.
Gaya Chicago
Computers and information systems.
5th.
Chicago:
URWIN,
2008.
Buku.
Gaya MLA
Computers and information systems.
5th.
Chicago:
URWIN,
2008.
Buku.
Gaya Turabian
Computers and information systems.
Chicago:
URWIN,
2008.
Buku.