Morris, Edward E.
Sydney University Press,, 1972
Buku Referensi
Fry, Edward
The University Press, 1967
Buku Teks
Collier McMillan , 1964
Buku Teks
Lambirth, Andrew
Learning Matters, 2005
Buku Teks
Ferguson, Nicolas, author
Evans Brothers Limited, 1981
Buku Teks