Feuer, Alan R., author
Prentice-Hall, 1982
Buku Teks
Valley, John J., author
Sams, 1992
Buku Referensi
Frakes, William Bruce, 1852-, author
Prentice-Hall, 1991
Buku Teks SO
Osman, Mohammed, author
Artech House, 1996
Buku Teks
Kelley, Al., author
The Benjamin Cumming Pub., 1984
Buku Teks