Gaya APA
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New Yersey:
PRENTICE-HALL.
Gaya Chicago
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3rd ed.
New Yersey:
PRENTICE-HALL,
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Gaya MLA
Digital Systems.
3rd ed.
New Yersey:
PRENTICE-HALL,
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Gaya Turabian
Digital Systems.
New Yersey:
PRENTICE-HALL,
1985.
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