Thorn, Eric A.
Jay Books , 1989
Buku Teks
Mason, Peter, author
Routledge, 1998
Buku Teks
Smerdon, Richard, author
Sweet and Maxwel, 2007
Buku Teks
Sanday, A.P., author
Hodder and Stoughton, 1979
Buku Teks
Edwards, Martin B., author
Kogan Page, 1991
Buku Teks