Stallings, William, author
Prentice-Hall, 1994
Buku Teks
Sherman, Kenneth, author
Reston Publishing company, 1981
Buku Teks
Forouzan, Behrouz A., author
McGraw-Hill, 2002
Buku Teks
Stallings, William, author
Prentice-Hall, 2004
Buku Teks
Stallings, William, author
Macmillan, 1985
Buku Teks