Buchsbaum, Walter H., author
Prentice-Hall, 1977
Buku Teks
Genn, Robert C., author
Parker Publishing Company, 1980
Buku Referensi
Loveday, George, author
Longman, 1995
Buku Teks
Lin, Wen C., author
CRC Press, 1986
Buku Referensi
Tocci, Ronald J., author
Prentice-Hall, 1980
Buku Teks