Keyssar, Helene
Macmillan Press , 1972
Buku Teks
edited by Clement Semmler
Oxford University Press, 1967
Buku Teks
Daniel, Helen
Penguin Books, 1988
Buku Teks
McCallum, John
Methuen Australia, 1987
Buku Teks
Hope, A. D., author
Melbourne University Press, 1963
Buku Teks