Erlande-Brandenburg, Alain
Thames and Hudson, [date of publication not identified]
Buku Teks
Baring-Gould, Sabine
Longman, 1906
Buku Teks
Coote, Stephen
Penguin Group, 1988
Buku Teks
Huizinga, Johan
New York: Doubleday, 1956
Buku Teks
Lane-Poole, Stanley, 1854-1931
Methuen, 1968
Buku Teks