Groves, Peter J.
Cavendish, 1995
Buku Teks
Shaw, Josephine
Macmillan, 1993
Buku Teks
by George A. Bermann ... [et al.]
West Pub. Co., 1993
Buku Teks
Toth, A. G.
Clarendon Press, 1990
Buku Referensi
Arnull, Anthony
Leicester University Press, 1990
Buku Teks