Anderson, R. G., author
Macdonald & Evans, 1982
Buku Referensi
edited by Fred Gruenberger
Prentice-Hall, 1968
Buku Teks
Wyatt, Allen L.
McGraw-Hill, 1990
Buku Referensi
Bell, C. Gordon, author
Digital Equipment, 1978
Buku Teks
Dabner, David, author
Page One, 2006
Buku Teks