Savitch, Walter, author
Addison-Wesley, 2001
Buku Teks
Snover, Stephen L., author
Prentice-Hall, 1982
Buku Teks
Bennet, William Ralph, author
Prentice-Hall, 1976
Buku Teks
Etter, Delores M. (Delores Maria), 1947-, author
Benjamin/Cummings, 1984
Buku Teks
Koffman, Elliot B., author
Addison-Wesley, 1981
Buku Teks