Lefebvre, Georges, author
Routledge, 2001
Buku Teks
Lefebvae, Georgaes, author
Routledge & Kegan Paul, 1962-1967
Buku Teks
Doyle, William, author
Oxford University Press , 1989
Buku Teks
Pastoureau, Michael
London Thames and Hudson 1997
Buku Teks
Sellery, G. C.
Madison: University of Wisconsin Press, 1950
Buku Teks