Roddy, Dennis, author
Reston Pblishing, 1982
Buku Teks
Sedra, Adel S., author
Erlangga, 1990
Buku Teks
Sedra, Adel S., author
OXford University Press, 1991
Buku Teks
Marston, R. M., author
Heinemann Newnes, 1989
Buku Referensi
Roddy, Dennis, author
Prentice Hall, Inc., 1980
Buku Teks