Dent, Edward J
Penguin Books, 1949
Buku Teks
Peyser, Ethel
G.P. Putnam's Sons, 1956
Buku Teks
Raeburn, Michael
Thames and Hudson, 1998
Buku Referensi
Raeburn, Michael
Thames and Hudson , 1998
Buku Referensi
Warrack, John
Oxford University Press, 1996
Buku Referensi