Aldridge, W. Norman
Taylor and Francis, 1996
Buku Teks
Tanenbaum, Albert, author
McGraw-Hill, 1951
Buku Teks
Arnold, part of the Hodder Headline group, 2018
Majalah, Jurnal, Buletin
Macmillan 1995, 1995
Buku Teks
Andreas Luch, editor
[, Springer], 2012
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