Curtis, Michael
Harper & Row, 1965
Buku Teks
Bushell, Stephen W.
Wyman and Sons, 1906
Buku Teks
Burling, Judith
Thames and Hudson, 1953
Buku Teks
Willetts, William Y.
Penguin Books , 1958
Buku Teks
edited by Gordon Grice
Rockport Publishers, 1999
Buku Teks