Gaya APA
System analysis, design, and compulation. (1991).
USA:
prentice-hall.
Gaya Chicago
System analysis, design, and compulation.
.
USA:
prentice-hall,
1991.
Buku.
Gaya MLA
System analysis, design, and compulation.
.
USA:
prentice-hall,
1991.
Buku.
Gaya Turabian
System analysis, design, and compulation.
USA:
prentice-hall,
1991.
Buku.