Gaya APA
Windows 7 SP1 Quick Steps. (2011).
New York:
Matthews Technologies.
Gaya Chicago
Windows 7 SP1 Quick Steps.
.
New York:
Matthews Technologies,
2011.
.
Gaya MLA
Windows 7 SP1 Quick Steps.
.
New York:
Matthews Technologies,
2011.
.
Gaya Turabian
Windows 7 SP1 Quick Steps.
New York:
Matthews Technologies,
2011.
.