Cherry, Edith
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Buku Teks
Colletti, Marjan, author
Ashgate Publishing Limited, 2013
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Sharples Holden Pasquarelli, editor
Wiley, 2002
Buku Teks
Yosua Suhandi, author
Fakultas Ilmu Komputer Universitas Indonesia, 2013
UI - Tesis Membership
Applied Science Publishers, 1975
Buku Teks