Butlin, S.J.
Australian War Memorial, 1955
Buku Teks
Butlin, S.J.
Australian War Memorial, 1955
Buku Teks
Woodford, Michael
Princeton University Press, 2003
Buku Teks
Woodworth, George Walter
McGraw-Hill, 1950
Buku Teks
Grubel, Herbert G.
Penguin Books, 1972
Buku Teks