revised and updated by Sandy Norman
Library Association Publishing, 1999
Buku Teks
Cornish, Graham P., author
Facet Publishing , 2004
Buku Referensi
Cornish, G. P., author
Cambridge University Press, 2015
eBooks
Artikel Jurnal
edited by K.R. McColvin
Association of London Chief Librarians, 1978
Buku Referensi