Kunkel, Wolfgang
At The Clarendon Press, 1975
Buku Teks
Tellegen-Couperus, Olga
Routledge, 1993
Buku Teks
Fogg, Gordon Elliott, 1919-
Cambridge Universitry Press, 1992
Buku Teks
edited by R.C. Olby, G.N. Cantor, J.R.R. Christie and M.J.S. Hodge
Routledge, 1990
Buku Referensi
edited by W.F. Bynum, E.J. Browne, Roy Porter
Macmillan Reference Books, 1989
Buku Referensi