Gaya APA
Obrien, James A. (2010).
Introduction to information systems (15e).
New York:
McGraw Hill.
Gaya Chicago
Obrien, James A.
Introduction to information systems.
15e
New York:
McGraw Hill,
2010.
Buku.
Gaya MLA
Obrien, James A.
Introduction to information systems.
15e
New York:
McGraw Hill,
2010.
Buku.
Gaya Turabian
Obrien, James A.
Introduction to information systems.
15e
New York:
McGraw Hill,
2010.
Buku.