Gallo, Michael A., author
Prindle, Weber and Schmidt, 1985
Buku Teks
Halvorson, Michael, author
Elex Media Komputindo, 2000
Buku Referensi
Halvorson, Michael, author
Elex Media Komputindo, 2000
Buku Teks
Susanto, author
Dinastindo, 1990
Buku Teks
Snover, Stephen L., author
Prentice-Hall, 1982
Buku Teks