Hose, Charles, 1863-1929
Oxford University Press, 1993
Buku Teks
Robinson, Danielm
Lonely Publications Pty Ltd, 2011
Buku Referensi
Mackinnon, John Ramsay
[publisher not identified], [date of publication not identified]
Buku Teks
Luce, Gordon H.
J.J. Augustin , 1969
Buku Referensi
Spencer, Baldwin, 1860-1929
Macmillan, 1899
Buku Teks