Edwards, Martin B., author
Kogan Page, 1993
Buku Teks
Edwards, Martin B., author
Kogan Page, 1991
Buku Teks
Sayer, Faye, author
Bloomsbury, 2015
Buku Teks
Coombes, Davies, M., 1956-
E. & F.N. Spon , 1989
Buku Teks
Smith, Kelvin, author
Facet Publishing, 2004
Buku Teks