Crawford, John, author
Aslib, 2000
Buku Teks
King, Donald W., author
Information Resources Press , 1971
Buku Teks
Pantry, Sheila, author
Facet Publishing, 2004
Buku Teks
Weingand, Darlene E., author
Libraries Unlimited, 1999
Buku Teks
Gallacher, Cathryn, author
Aslib, 1999
Buku Teks