Townsend, Ralph, author
Butterworth, 1982
Buku Teks
Kline, Raymond M., author
Prentice-Hall, 1977
Buku Teks
Fletcher, William I., 1938-, author
Prentice-Hall, 1980
Buku Teks
Holdsworth, Brian, author
Butterworths, 1982
Buku Teks
Holdsworth, Brian, author
Butterworths, 1988
Buku Teks