edited by Colin Cameron
Sage, 2014
Buku Teks
Wilson, John Furness
American Library Association, 1982
Buku Referensi
Whitla, William
Wiley-Blackwell, 2010
Buku Referensi
edited by David Lusted
Routledge, 1991
Buku Referensi
Spilker, Bert
Raven Press, 1984
Buku Teks