Hetherington, John, author
Cheshire, 1960
Buku Teks
Hughes, Dick
Melbourne Marlin Books 1977
Buku Teks
Southall, Ivan, author
Melbourne: Oxford University Press, 1964
Buku Teks
Lohrey, Amanda, compiler
Australian Government Publishing Service, 1988
Buku Referensi
Canbera: Australian Government Publishing service, 1980,
Buku Referensi