Sawin, Dwight H., author
Lexington Books, 1977
Buku Teks
Halsall, Fred, author
Pitman, 1982
Buku Teks
Paterson, John, author
John Wiley & Sons, 1980
Buku Teks
Eccles, William J., author
Addison-Wesley Pub., 1985
Buku Teks
Dixey, Graham, author
Stanley Thornes, 1991
Buku Teks