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ANDI, 2005
Buku Teks
Kofler, Michael, author
Apress, 2004
Buku Teks
Price, Jason, author
McGraw-Hill, 2008
Buku Teks
Novrita Andriani, author
Fakultas Ilmu Komputer Universitas Indonesia, 1995
UI - Skripsi (Membership)
Codd, E.F., author
Addison-Wesley, 1990
Buku Teks