Syandra Sari
Fakultas Ilmu Komputer Universitas Indonesia, 1995
UI - Skripsi Membership
Feuer, Alan R.
Prentice-Hall, 1982
Buku Teks
Valley, John J.
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Buku Referensi
Tare, Ramkrishna S.
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Buku Teks
Daugherty, Dale
O'Reilly and Associates , 1991
Buku Teks