Gaya APA
Microsoft office excel 2003. (2004).
New York:
[s.n.].
Gaya Chicago
Microsoft office excel 2003.
Cet. 1.
New York:
[s.n.],
2004.
Text.
Gaya MLA
Microsoft office excel 2003.
Cet. 1.
New York:
[s.n.],
2004.
Text.
Gaya Turabian
Microsoft office excel 2003.
New York:
[s.n.],
2004.
Print.