Nisonger, Thomas E., author
Libraries Unlimited, 1992
Buku Referensi
Sutcliffe, Glyn, author
Gower, 1995
Buku Teks
edited by Gregg Sapp
The Haworth Press, 1992
Buku Teks
Clayton, Peter, author
Facet Publishing, 2006
Buku Teks
Clayton, Peter, author
Library Association Publishing, 2001
Buku Teks