Gaya APA
Microsoft Office Excel 2003. (2003).
New York:
[s.n.].
Gaya Chicago
Microsoft Office Excel 2003.
.
New York:
[s.n.],
2003.
Text.
Gaya MLA
Microsoft Office Excel 2003.
.
New York:
[s.n.],
2003.
Text.
Gaya Turabian
Microsoft Office Excel 2003.
New York:
[s.n.],
2003.
Print.