Nicholas, David, author
Mansell Publishing, 1988
Buku Teks
Chowdhury, G.G., author
Library Association, 2001
Buku Teks
Hartley, R.J., author
Bowker-Saur, 1990
Buku Teks
written by the Staff of the Science and Technology Information Service
British Library , 1991
Buku Teks
Ellis, David, author
Library Association Publishing, 1996
Buku Teks