Walkerly, John F.
John Wiley & Sons, 1976
Buku Teks
Levine, Morris E.
Prentice-Hall, 1982
Buku Teks
Lee, Samuel C., author
Prentice-Hall India, 1981
Buku Teks
Lee, Samuel C., author
Erlangga, 1994
Buku Teks
Horn, Delton T.
Elex Media komputindo, 1989
Buku Teks