Howse, Chris
CDU Press,, 2007
Buku Teks
Markus, Andrew, author
Allen & Unwin , 1990
Buku Teks
Keneally, Thomas, 1935-, author
Rand McNally, 1984
Buku Teks
Berndt, Ronald M., author
University Microfilms International, 1954
Buku Teks
Coombs, H.C.
Australian National University Press, 1978
Buku Teks