Smerdon, Richard, author
Sweet and Maxwel, 2007
Buku Teks
Argenti, John, author
Allen & Unwin, 1975
Buku Teks
Nicholls, Audrey, author
George Allen and Unwin, 1972
Buku Teks
Strong, William S., author
MIT Press, 1981
Buku Teks
Chambers, Erve, author
Waveland Press, 1989
Buku Teks