Sawer, Geoffrey, 1910-1996, author
Melbourne University Press, 1973
Buku Teks
Theophanous, Andrew C.
Oxford University Press, 1980
Buku Teks
Edward Arnold, 1978
Buku Teks
University of Queensland, 1968
Buku Teks
Norris, R.
Melbourne University Press, 1975
Buku Teks