Gaya APA
MIcrosoft Office 2007 Word & Excel. (2009).
Business Media:
media akademi.
Gaya Chicago
MIcrosoft Office 2007 Word & Excel.
.
Business Media:
media akademi,
2009.
Text.
Gaya MLA
MIcrosoft Office 2007 Word & Excel.
.
Business Media:
media akademi,
2009.
Text.
Gaya Turabian
MIcrosoft Office 2007 Word & Excel.
Business Media:
media akademi,
2009.
Print.