Sawer, Geoffrey, 1910-1996, author
Melbourne University Press, 1974
Buku Teks
edited by Paul Boreham, Geoffrey Stokes and Richard Hall
Pearson-Longman, 2004
Buku Teks
George Allen & Unwin Ltd, 1981
Buku Teks
Penguin Books, 1972
Buku Teks
Cramer, John, author
Allen & Unwin, 1989
Buku Teks