Oates, Wallace E.
Edward Elgar, 2011
Buku Teks
Greenwood, Gordon, 1913-1986
University of Queensland, 1976
Buku Teks
Sawer, Geoffrey, 1910-1996
Melbourne University Press, 1967
Buku Teks
Livingston, William S.
At The Clarendon Press, 1956
Buku Teks
Rossum, Ralph A.
Lexington Books, 2001
Buku Teks