Watson, William, author
London the Studio, 1959
Buku Referensi
Duby, George ; Daval Jean-Lue, edited
Taschen, 2010
Buku Referensi
Jaceb, E. F., author
Clarendon Press, 1961
Buku Teks
Hunt, Percival
University of Pittsburgh Press, 1962
Buku Teks
Stratmann, Francus Henry
London Oxford University Press 1958
Buku Referensi