Sichel, Edith
The Renaissance / Edith Sichel
Oxford University Press, 1959
 Buku Teks SO
The selected short stories of Edith Wharton
introduced and edited by R. W. B. Lewis
Maxwell Macmillan International, 1991
 Buku Teks SO
Marcucci, Luisa
Medieval painting
Studio Books , 1960
 Buku Referensi
Hoffman, Ross J.S.
Medieval history
Littlefield, Adams, 1958
 Buku Teks SO
Medieval age
edited by Angel Flores
Dell Publishing, 1963
 Buku Teks SO