Hicks, Warren B., author
R.R. Bowker, 1977
Buku Teks
American Library Association, 1970
Buku Referensi
Fothergill, Richard
Clive Bingley, 1990
Buku Referensi
Fothergill, Richard, author
Clive Bingley , 1984
Buku Teks
Wilkie, Chris, author
Aslib, 1999
Buku Teks