Radding, Charles M., author
Yale University Press, 1991
Buku Teks
edited by Rolf Toman; photos by Achim Bednorz
H.F. Ullmann, 2010
Buku Referensi
Conant, Kenneth John, author
Penguin Books, 1959
Buku Teks
Schofield, John, author
Yale University Press, 1994
Buku Teks
Branner, Robert
George Braziller, 1961
Buku Teks