Bradley, Phil, author
Aslib, 2000
Buku Teks
Abraham, Ralph, author
Telos , 1995
Buku Teks
Horton, Sarah, author
Yale University Press, 2000
Buku Teks
Bradley, Phil, author
Aslib, 2000
Buku Teks
Tomaiuolo, Nicholas G., author
Information Today, 2004
Buku Teks