Matthews, Joseph R.
Libraries Unlimited, 2005
Buku Teks SO
Corrall, Sheila
Aslib, 1994
Buku Teks SO
edited by Kent Hendrickson
The Haworth Press , 1991
Buku Teks SO
Stueart, Robert D.
Libraries unlimited, Inc, 1987
Buku Teks
Mckay, Duncan
The Association for Information Management, 1995
Buku Teks SO