Wheeler, Geoffrey
Bodley Head, 1966
Buku Teks
Bloch, Marc, author
Routledge, 1971
Buku Teks
Sokolovsky, Joan
Westview Press, 1990
Buku Teks
Neuzeit
Verlag Hermann Bohlaus Nachfolger, 1939
Buku Teks
[publisher not identified], [date of publication not identified]
Naskah