Lascarides, Michael, author
Facet, 2012
Buku Teks
Holden, Greg, author
American Management Association, 2008
eBooks
Coffman, Steve, author
[American Library association, American Library association], 2003
eBooks
Poulter, Alan, author
Facet Publishing , 2005
Buku Teks
[edited by] Ricardo Gomez
Information Science Reference, 2012
Buku Teks