Gaya APA
Obrien, James A. (1998).
Introduction to information systems (8e).
Chicago:
Irwin.
Gaya Chicago
Obrien, James A.
Introduction to information systems.
8e
Chicago:
Irwin,
1998.
Buku.
Gaya MLA
Obrien, James A.
Introduction to information systems.
8e
Chicago:
Irwin,
1998.
Buku.
Gaya Turabian
Obrien, James A.
Introduction to information systems.
8e
Chicago:
Irwin,
1998.
Buku.