Stallings, William
Data and communications
Prentice-Hall, 1994
 Buku Teks SO
Loomis, Mary E.S.
Data communications
Prentice-Hall, 1983
 Buku Teks SO
Roden, Martin S.
Digital and data communication systems
Prentice-Hall, 1982
 Buku Teks
Heijer, P.C. den
Komunikasi data = Data communications
Elex Media Komputindo, 1987
 Buku Teks SO
Stallings, William
Data and computer communications
Macmillan, 1988
 Buku Teks