Jordan, Peter, author
Gower , 1995
Buku Teks
Jones, Noragh, author
Gower, 1987
Buku Teks
Jordan, Peter, author
Ashgate, 2002
Buku Teks
Allan, Barbara, author
Library Association Publishing, 2000
Buku Teks
Totterdell, Anne, author
Library Association Publishing, 2000
Buku Teks