Gregory, Robert Henry, author
Chatto and Windus, 1963
Buku Teks
Scheid, Francis, author
McGraw-Hill, 1983
Buku Teks
Gottfried, Byron S., author
McGraw-Hill, 1982
Buku Teks
Maynard, Jeff, author
Butterworths, 1972
Buku Teks
Rice, John G., author
John Wiley & Sons, 1981
Buku Teks