Gaya APA
Microsoft Windows Operating System Versi 3.1. ().
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Gaya Chicago
Microsoft Windows Operating System Versi 3.1.
.
Yogyakarta:
And Offset,
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Text.
Gaya MLA
Microsoft Windows Operating System Versi 3.1.
.
Yogyakarta:
And Offset,
.
Text.
Gaya Turabian
Microsoft Windows Operating System Versi 3.1.
Yogyakarta:
And Offset,
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Print.