Symantec, 1991
Buku Teks
Skinner, G. G., author
Pitman, 1993
Buku Teks
Ian Chandra K., author
Elex Media Komputindo, 1993
Buku Teks
Rijanto Tosin, author
Dinastindo, 1991
Buku Teks
by William S. Davis ... [and others]
Benjamin/Cummings, 1990
Buku Teks