Loomis, Mary E.S.
Data communications
Prentice-Hall, 1983
 Buku Teks SO
Stallings, William
Data and communications
Prentice-Hall, 1994
 Buku Teks SO
Marston, R.M.
Newnes electronic circuit pocket book
Newnes, 1993
 Buku Teks
Statistical pocket book of Indonesia 1963
Indonesia. Biro Pusat Statistik
Biro Pusat Statistik, 1963
 Buku Referensi
Brindley, Keith
Newnes electronics engineer's pocket book
A Butterworth-Heinemann Book, 1994
 Buku Teks