compiled by Michael and Irene Ash
Gower, 1995
Buku Referensi
PPS BIT UI, 2001
Multimedia
Goldstein, Douglas, author
Richard D. Irwin, 1997
Buku Teks
edited by Ben Mephan
Routledge , 1996
Buku Teks
Djoko Sutopo, author
Alex Media Komputindo, 2019
Buku Teks