Burling, Judith, author
Thames and Hudson, 1953
Buku Teks
Willetts, William Y., author
Penguin Books , 1958
Buku Teks
Ferguson, John C., author
The Commercial Press Limited , 1939
Buku Teks
Ferguson, John C., author
Scammon Lectures, 1918
Buku Teks SO
Bushell, Stephen W., author
Wyman and Sons, 1906
Buku Teks