Underwood, David
Rizzoli, 1994
Buku Teks
Carey, Peter
University of Queensland Press, 1988
Buku Teks
Heller, Hermann, 1891-1933
A.W. Sijthoff, 1934
Buku Teks
London Stevens & Sons Limited 1975,
Buku Teks
Holland, Vyvyan
Thames & Hudson, 1988
Buku Teks