Markus, Andrew, author
Allen & Unwin , 1990
Buku Teks
Howse, Chris
CDU Press,, 2007
Buku Teks
Keneally, Thomas, 1935-, author
Rand McNally, 1984
Buku Teks
Markus, Andrew, author
Hale & Iremonger, 1979
Buku Teks
Parkin, Andrew
Macmillan, 1982
Buku Teks