Ross, Lloyd
Macmillan, 1977
Buku Teks
Huges, Colin Anfield
Oxford University Press, 1976
Buku Teks
d`Alpuget, Blanche
Schwartz, 1984
Buku Teks
Hawke, Bob
william Heinemann Australia, 1994
Buku Teks
Serle, Geoffrey, author
Melbourne University Press in association with Monash University, 1982
Buku Referensi