edited by Andrew Blowers and Bob Evans
Routledge, 1997
Buku Teks
Freeman, T.W.
Hutchinson University Library, 1974
Buku Teks
Potter, D.C.
Sweet & Maxwell Limited, 1959
Buku Teks
Hall, Peter
Routledge, 1992
Buku Teks
Hall, Peter
Routledge, 2011
Buku Teks