edited by Ian Ousby
Cambridge University Press, 1993
Buku Referensi
edited by Ian Qusby
Cambridge University Press, 1988
Buku Referensi
Weiner, E.S.C., compiler
Clarendon Press, 1993
Buku Referensi
Peters, Pam
Cambridge University Press, 1995
Buku Referensi
Sage, Lorna
Cambridge Univesity Press, 1999
Buku Referensi