Coe, Michael D., author
Thames & Hudson, 2006
Buku Teks
Butterfield, Herbert, author
Cambridge University Press, 1969
Buku Teks
Butterfield, Herbert, author
Cambridge University Press, 1955
Buku Teks
Robbins, Lawrence H., author
Robert Hale, 1990
Buku Teks
Flatman, Joe, author
Cambridge University Press , 2011
Buku Teks