Gaya APA
Introduction To Information System. (2007).
New York:
[s.n.].
Gaya Chicago
Introduction To Information System.
.
New York:
[s.n.],
2007.
Text.
Gaya MLA
Introduction To Information System.
.
New York:
[s.n.],
2007.
Text.
Gaya Turabian
Introduction To Information System.
New York:
[s.n.],
2007.
Print.