Gaya APA
Digital Design. (2002).
New Delhi:
prentice-hall.
Gaya Chicago
Digital Design.
.
New Delhi:
prentice-hall,
2002.
Buku.
Gaya MLA
Digital Design.
.
New Delhi:
prentice-hall,
2002.
Buku.
Gaya Turabian
Digital Design.
New Delhi:
prentice-hall,
2002.
Buku.